I have a love/hate relationship with my 1999 Trans Am WS6. I love the body styling (especially the Ram Air hood), although the materials used in the interior are cheap, flimsy and poorly put together.
The sheer power of the stock WS6 is awesome, and I was previously driving a 1996 Mustang GT. This car makes my old Mustang seem like a mule. The added horsepower from my SLP exhaust and larger airbox lid made a noticeable difference, and the stock exhaust, while fairly loud, was nothing compared to my upgraded SLP exhaust rumble.
Literally everything else about this car irritates me, though. I'm the second owner of this ride (with currently 105k miles on it in August 2009), and have owned it since July 2004, yet I have had to replace both window motors, the fuel pump, the alternator (FOUR TIMES), the starter coil, the entire rear end TWICE, the oil pan gasket, the transmission repaired...this list is too long to continue here. The mileage sucks, the steering wheel is too large, the air conditioning is weak, the optional 500W Monsoon stereo system is loud, but all the stock speakers are horrible (I've had to replace the same speaker twice before replacing those twin speakers with Infinity speakers after the 2nd speaker broke).
The headlight gears broke on me once, and this car also has unlimited electrical and wiring problems. I just discovered today that my entire air conditioning system needs to be replaced due to multiple leaks and a bad compressor, and both idler pulleys, belt tensioners, and both belts need to be replaced. This car has ended up not being worth the head-turns and positive comments I get at red lights and gas stations. I'd consider covering it with a tarp and getting into a cheap Corolla until I can afford to work on this Trans Am as a project car. :(