I just installed a Kenwood KDC-248U (on sale at Quadratec, $79.99). Decent sound, but I think I'll be installing an amp and new speakers to go with it. Needs some more "umph".
His: 1999 Flame Red TJ, 4" lift with 1.25" body lift
With a few mods...
Hers: 1987 Grand Wagoneer, stock w/Cooper 31s