Get the DSM if. You want more of a daily driver/ weekend fun car. It will be faster out the box, and dollar for dollar, will make more power than the 240. But its front wheel drive, which is boring either way you look at it.

Get the 240 If you want something to BUILD. Its rwd, and it has a huge aftermarket, so you can make the car into anything that you want.

Personally I would get the GST convertibl. Call me . I don't care.