The first point to note is that all three of the systems offer the same excellent performance. All are secure, thermally efficient to an 'A' WER, completely watertight and built to last. The key difference is in the authenticity of the appearance.
We recommend the Ultimate Rose, as it is indistinguishable compared with real timber. However, both the Heritage Rose and Charisma Rose uPVC sliding sash windows make for fantastic alternative options.