A microelectromechanical systems, MEMS, device, comprising: a planar substrate; a drive assembly anchored to said planar substrate, said drive assembly including: a first drive mass and a first coupling mass; a second drive mass and a second coupling mass; the first drive mass residing in a central opening extending through the first coupling mass; and the second drive mass residing in a central opening extending through the second coupling mass; and a stiff beam, wherein: the stiff beam interconnects the first drive mass with the second drive mass; the stiff beam is located between the first drive mass and the second drive mass; and a lengthwise dimension of the stiff beam is oriented perpendicular to a drive direction of the first drive mass and the second drive mass, said drive direction being substantially parallel to said planar substrate, wherein said stiff beam pivots about an axis that is substantially perpendicular to said planar substrate in response to drive motion of said first and second drive masses in said drive direction, a first sense mass flexibly coupled with said drive assembly, the first coupling mass residing in a central opening extending through the first sense mass; a second sense mass flexibly coupled with said drive assembly, said first and second sense masses being constrained to move in a sense direction that is substantially parallel to said planar substrate and substantially perpendicular to said drive direction, the second coupling mass residing in a central opening extending through the second sense mass; a spring system configured to reduce in-phase motion of said first and second sense masses, said spring system including: a first spring arrangement coupled to each of said first and second sense masses at a first location laterally displaced away from a centerline of said MEMS device, said centerline being oriented substantially parallel to said sense direction; and a second spring arrangement coupled to each of said first and second sense masses at a second location laterally displaced away from said centerline, wherein said first and second spring arrangements are oriented in mirror symmetry relative to said centerline. a planar substrate; a drive assembly anchored to said planar substrate, said drive assembly including: a first drive mass and a first coupling mass; a second drive mass and a second coupling mass; the first drive mass residing in a central opening extending through the first coupling mass; and the second drive mass residing in a central opening extending through the second coupling mass; and a first drive mass and a first coupling mass; a second drive mass and a second coupling mass; the first drive mass residing in a central opening extending through the first coupling mass; and the second drive mass residing in a central opening extending through the second coupling mass; and a stiff beam, wherein: the stiff beam interconnects the first drive mass with the second drive mass; the stiff beam is located between the first drive mass and the second drive mass; and a lengthwise dimension of the stiff beam is oriented perpendicular to a drive direction of the first drive mass and the second drive mass, said drive direction being substantially parallel to said planar substrate, wherein said stiff beam pivots about an axis that is substantially perpendicular to said planar substrate in response to drive motion of said first and second drive masses in said drive direction, the stiff beam interconnects the first drive mass with the second drive mass; the stiff beam is located between the first drive mass and the second drive mass; and a lengthwise dimension of the stiff beam is oriented perpendicular to a drive direction of the first drive mass and the second drive mass, said drive direction being substantially parallel to said planar substrate, wherein said stiff beam pivots about an axis that is substantially perpendicular to said planar substrate in response to drive motion of said first and second drive masses in said drive direction, a first sense mass flexibly coupled with said drive assembly, the first coupling mass residing in a central opening extending through the first sense mass; a second sense mass flexibly coupled with said drive assembly, said first and second sense masses being constrained to move in a sense direction that is substantially parallel to said planar substrate and substantially perpendicular to said drive direction, the second coupling mass residing in a central opening extending through the second sense mass; a spring system configured to reduce in-phase motion of said first and second sense masses, said spring system including: a first spring arrangement coupled to each of said first and second sense masses at a first location laterally displaced away from a centerline of said MEMS device, said centerline being oriented substantially parallel to said sense direction; and a second spring arrangement coupled to each of said first and second sense masses at a second location laterally displaced away from said centerline, wherein said first and second spring arrangements are oriented in mirror symmetry relative to said centerline. a first spring arrangement coupled to each of said first and second sense masses at a first location laterally displaced away from a centerline of said MEMS device, said centerline being oriented substantially parallel to said sense direction; and a second spring arrangement coupled to each of said first and second sense masses at a second location laterally displaced away from said centerline, wherein said first and second spring arrangements are oriented in mirror symmetry relative to said centerline.