should i give the car back and get a bmw 335i coupe or any other type of car that would match the performance of the m3???

Well the 335i coupe doesn't match the performance of an 2008 M3. The M3 has a 415 some horsepower V8 while the 335 has only 300hp(or so they say). I drive a 335i Coupe and its the perfect car for me, all the power I will ever need. But I've driven the M3 and if you can afford it and the gas that it burns why not. That M3 has the best sounding engine when accelerating through the gears. And now since I've driven with it, I need to get a BMW short shift kit for my 335i. KEEP THE M3, its an awesome car. Plus you get all the toys like electronically variable suspension dampening, the limited slip diff, the M tuned suspension components, the upgraded M Leather and interior, etc.