Been some 7+ years since I had my Mk1 ..... until then the very best car I had driven ....... ever .......... and I drove most of what we had on our garage forecourt ... . Bentley, RR, Aston Martin, Jag etc . the Ls400 was the very best daily driving car I could have wished for..................... on reflection, guess it wallowed a bit, 15 inch brakes and wheels didn't compare to the hugging and braking performance of the Mk2 on 16" stuff.. and I loved my Mk2 ....... it seemed markedly better than the Mk1.
Engine performance ....... well tbh I can't really tell now the probable slightly appreciable difference in the Mks, all being superb with 4ltr power.
I do like the PWR mode in my Mk3, which I leave it in for my daily drive, it's just magical.
Looks, well, I do really like the Mk1 and Mk2 bodystyle best, but then I am old and a bit old fashioned in my outlook ...... preferring say the 1961 E Type Jag to later models and the 1960's RRs..
I think good well kept Mk1s will be very collectable at some time .............. but possibly not very useable as a daily driver coz one wants to keep classics for sunny days and in cotton wool a bit too.
That's what I like about my Mk3, it's a very useable daily driver that can be used, is worth bugger all and irreplaceable except with another Ls400.
Malc