Hey guys new member here with a tough decision on my hands. I have to choose between a MINT Dark Walnut Pearl ucf10 and a MINT Black Onyx ucf21. Now when I say mint condition I am not exaggerating, I mean extremely mint condition and bone stock. Both are owned by the same person and are up for the same price.

(ucf10) 1991 LS400: 84k miles
(ucf21) 1998 LS400: 90k miles

Now most will say go for the newer car but both of generations are my favorite in the history of the LS and I'm really torn. Now it comes down to pros and cons of the generations and common issues or problems, which I know little of, both had to tip the scales. If you kind folks could help me reason which is the better investment it would be much appreciated!

 

I've owned both, the 98 is noticibly faster and the 5spd auto is a big improvement over the 4spd, the extra cog is pretty worth it. Also softer leather and more insulation on the 98, not to mention the big 4 piston brakes on the 98.

Its an improvement in every way and all around from the 91, its not a hard decision if both are nice.

 

Everything is better in the 99 in every way. Period.
Also, unless the car has an factory air suspension, it is only a UCF 10/20. The 11/21 codes are only for air suspension cars and do not denote the mid-model changes seen in both generations. Just fyi

 

no USDM 11/21, denotes the rear seat/air combo that was never sold in north america.

 

I've also owned both a 90 and 98 and while the 90 was nice the 98 is better in every way like Shmee has noted. It also just looks better too IMO.

 

Thanks for all the replies, slept on it and if all goes well I'm going to go with the 98!

 

Hands down 98, 98-00 in my opinion were the best in everyway. No brainer good luck picking her up