Hi Gareth, have just traded my 07 LS460SEL in for a 09 LS600hl.
Now on my fifth LS and every one has been bought simply because I fell in love with that particular car.If we start rationalising every purchase we make, and justifying it, we'd all be driving Fiat Uno's.
My 460 was (is) an immaculate car and I had a great 4 years of ownership. The next owner is gonna get a cracking deal. I tend to think that Lexus, with their wealth of design and engineering experience, would only improve with each model.
Difference between the same spec 460 and 600 is probably about £9k. If you go for a 460 go for a SEL, lots of extra toys, probably a difference of £3k over the basic SE model.
A 6 year old car with 140k miles has probably been gliding up and down the motorways. A Lexus with full service history will just keep going.
Since signing the paperwork this morning all I can think of is Why, Why, Why. As I said, find a car, fall in love with it, sod the consequences, and enjoy.
Graham.