[Onurleft]

Doc...

GTR
E90 M3

If you want to spend 55k on something used with tons of potential.

M4 if you want to spend 70+ and wait another year minimum.

Based on everything you've said about your car I would ditch it for sure. Plus it has been wrecked, even though it wasn't your fault you do not want a wrecked car if you can just give it back and get another one with a clear history. Also it sounds like you just want to be more involved in the sportiness-ness and in that case i'd suggest the M3. It's a screamer. Oh and the family will benefit from the extra doors.