I drove the Lexus UH250H hybrid recently and liked it. Its the 4th generation hybrid apparently and I didn't find the CVT too whiney. We are also used to BMWs and the Lexus is very comfortable and totally different to drive. Worth driving and seeing if you like the RC 300H, you can usually tell straight away if you like a car.
I then drove a new RX300 H and it was dreadful in comparison. Whiney, heavy and lifeless in feel and a sort of wallowey ride. After half a mile in the passenger seat my wife said turn back I dont like it! It was meant to be for her but she didnt even want to drive it.
