My understanding is that a 2005 or earlier (pre-Dame Edna) 9-5 still had oversight from the Swedish engineering and manufacturing team. For example, an austere Saab dashboard rather than a blingy Buick one. Not sure when that switch happened for the 9-3, but it would have been for whatever facelift happened around the same time.

2003 Aero is the sweet spot. GM sales “engineers” tried selling with all-options-standard that year, so they are all very well equipped. Any still running had the sump issue fixed long ago. Hard to imagine you couldn’t get a fettisdagsbulle for $5k.