Installation OK. Previous bolt hole locations from previous GE installed Microwave did not align. After 30 years, Industry or company Standardization for bolt hole locations should be put in place for above cook-top microwaves. Note: Back plate from previous installation did work so 1/2 the installation was easy. 

Key pad functions seem easier and less complicated. Basic unit construction standards for the unit seem OK. Inside the microwave cooking area surfaces are not as friendly for cleaning as expected. 

No mention of new or improved durability/reliability features or improvements to the unit warranty are included in unit paperwork.

GE Profile Series - PVM9215SKSS