Thanks for the replies so far.
I get the point regarding LS430 vs LS460 and again, probably, the LS400 being more reliable than either!
There is something about the LS460 that just appeals to me over the LS430 (which is still an excellent car) and I fear i would always think, '...what if....' not going for the LS460.
LS600 an interesting one, perhaps even more complicated(?), but they seem double the price of an LS460.
I have seen what looks like a good example of an LS460 on Autotrader, up for £8000 but I know he would take closer to £5000, but I have not seen yet.
I also like the idea of a Honda Legend - smaller but 4x4, lovely V6, Honda reliability etc
Dan