I had a 1999 LS400. Great car, A 98+ is the oldest I would own though. I also had a 93 SC400 with the 1UZ-FE and 4 speed auto. The upgraded trans and engine in the 98+ is well worth it. I later owned an 03 GS430 with the 4.3L engine and that was another improvement. Anyway, Lexus had some good cars back then.
I recall the first time I sat in a Cadillac was back in 1986 when my cousin honked his horn in his brand new Sedan Deville, wow i thought it was a smooth ride!
I also owned a 1992 Lexus LS400 (back in late 90's). The car felt sooooo smooth IMO gave Cadillac a run for it's money!
The only issue I had with mines was the driver's seat when reclined tilted only on one side(looking from frontal view looks twisted and so did your back.) lol