Odd how many of us like cars and high end systems, maybe we just appreciate high perfomance stuff? The two hobbies are similar in that you need to keep things in perspective or you can go WAY overboard for that last inch of perfection. Slippery slope for both pass times. I've owned various BMW and Audis, fun cars but the care and feeding of fine German engineered automobiles can be a bit overwhelming.
My winter car is a stock 2001 Acura 3.2 Type S (yeah, including the Bose system but I just can't bring myself to carve up the dash switching out the 6-disc head unit). Fun car: 265 HP, 17" rims, tiptronic tranny if you want to shift gears (or leave it in automatic), great handling, and totally reliable. No regrets, a real nice ride.
My summer car is a 1989 Toyota Supra Turbo, never winter driven and for the most part all original. Cosmetic changes were the mags (Momo's), window tinting, and of course the stereo. Dual MTX subwoofers, dual Pioneer amps, 12-CD changer, Pioneer head unit, stock speakers swapped out for Infinity's, and 1" dome tweets thrown in for good measure. The Type III Supras are gorgeous looking cars and one helluva lot of fun to drive!