My parents bought their '99 Intrige GLS with 27,000 miles in 2001. They've driven it to Mexico once, and to Michigan countless times. It's proven to be as reliable as their Toyota Corolla. It now has 100,000 miles and it still runs like the day they bought it. Regular maintenance is all that has been needed. The seats are comfy and the dual zone climate control is great as my dad is always cold and mom is the opposite. They're thinking of getting another car, but why? If anything they'd get a used Aurora with the same bulletproof Northstar based 3.5L V6. GM made a big mistake dropping Oldsmobile and the 3.5L and 4.0L engines. They should've kept the lineup, or at least put the engines in Buick.
The quiet yet muscular purr of the 3.5L V6, dual auto climate control, Bose sound system, the "muscles" on the rear quarter panels, and the height in the rear seats