I've had yjs and tj's and they both ride rough, I can't say ones better than another. However, the ride is what I like about jeeps, you won't fall a sleep driving one. Look for the frame rot in the rear section.
1987 wrangler, 258 I-6, 5-speed.
2007 liberty sport 4X4, automatic
2009 ford ranger 4x4 FX4 OFF/ROAD, 5-speed