I'd get the GT3 too, but my advice? go for what you want and stop listening to peaople. They are not going to drive he car. You will.
If you want a GT war, maybe what you're looking for is a 997 turbo. The M3 looks good and perfs well. Price is good too and probably close to the maserati (old one) prices.
If you want the most fun out of it, the GT3 is a no brainer in this price range.
Good luck