Many thanks Diarmaid for the explanation.
Owners of the ES will give you their thoughts I`m sure, but having had 10 years with my GS 450h, I can confidently state that the Lexus ride is quiet and serene. It is not a drivers car as BMW `s are, but it accelerates in a linear fashion with minimal fuss. Foot to the floor is not the way to achieve progress and will cause the ecvt transmission to produce angst for the driver.
Progress is best achieved by adopting a driving style which is rarely adopted by non Lexus drivers and involves educated and knowledgeable anticipation. The electric range will be minimal, barely 15% of your BMW `s.
The best advice I can give you is to try one for several hours in a multitude of situations, over 2 days if possible.
Good luck.