Took the 350 in for 40000 service today and the "swines" at Bracknell gave me a new 450h to tool about in.
First impressions is that it is a serious peice of kit. Quiet, economical (34.5mpg today), very comfy. Lots of nice new stuff like DAB radio, HDD music, USb slot etc. Also 3d satnav, keyless entry and chilled seats.
Bad points - only that it ias only 2 parking sensors on front - will need to get two more added for peace of mind and, that I'll have to buy one now!!