They are great vehicles. I own a Sy and love it, but it's a very expensive toy. They don't take the abuse a 3.8 will and the stock transmissions are really weak. Some parts are outrageously high, but most are moderately priced. The aftermarket is almost nonexsistant when it comes to Sy/Ty's.
I'm sure there are more qualified people on here to elaborate. There is nothing like an awd BOOSTED launch!