From your original list..
Acura TL Has had auto tranny problems, not enough time has passed to see if resolved
Acura TSX You may have had it right from the beginning, worth strong consideration, not as much $$
Audi A3, with DSG See your Volkswagen notes
Audi A4 2.0T Ditto
BMW 325i, previous generation Expensive repairs if not warrantied, maybe go new same $$ as IS
BMW 330i, previous generation Ditto
Cadillac CTS Haven't heard much about these one way or the other, watch depriciation.
Ford Fusion V6, 3.0L Much prefer the Mazda6 Sport wagon if you are going 3.0L
Ford Fusion V6, 3.5L If you want the 3.5L then go Fusion over the 6
Infiniti G35 Can't go wrong with this, AWD avail too if you want it.
Lexus IS 250 Same kind of money as the BMW, solid reliability. For less $$ I like the G35.
Lexus IS 250, AWD Ditto
Lexus IS 350, used Will be scarce and almost as much as new. Found first gen IS underwhelming.
Mazda6, with 3.5L engine - not sure when available
Mazda6, SportWagon If you go to Rona or Ikea a lot this is the ride. Begs for a stick shift.
Saab 9-3 - Reliability is poor, according to Consumers Reports
Subaru Legacy GT, sedan ($36,795) Safe, solid, reliable and AWD.
Subaru Legacy GT, sedan, LTD ($40,295) Ditto
Subaru Legacy GT, wagon, LTD ($41,795) Ditto
Subaru WRX, sedan ($35,495) - prefer larger size/refinement of Legacy GT
Subaru WRX, Sportwagon ($35,495) - prefer larger size/refinement of Legacy GT
Volvo S40 T5 Too close in price to some great cars above.
VW Jetta GLI, with DSG - may be willing to wait to see first couple years' reliability, if it's my final top pick