I'm the same as Phil, having experience of a ridiculous number of parking dents by idiots who damage my cars over the years, I struggle to take the LS400's anywhere and park them, without choosing the furthest possible spot, and taking two spaces (so as not to inconvenience anyone else who needs to park, I park at the furthest possible point, away from everyone)
Due to the boat like size, I don't think I'd be comfortable driving in a multistorey. I've seen spaces that small fiats fill up, as no doubt have many others.
Having said that, they're all lovely cars though arent they. Pure luxury and engineering excellence.
LS460 with a maintenance and warranty from Lexus, peace of mind. Or a cheaper LS430 with change to spend on fixes? Notwithstanding the vast amount of free info on this site to boot.