before you go deciding what you want, find out how much insurance will be. RX7 will be a grip, Evo too.
as for the RX7s being the best handling.. thats only the R1 version. all the other versions (base and touring) dont handle as well.
dont get a VR4, big and slow
dont swap your DD. keep it as stock as possible and less shit will happen
so what is wrong with your integra in the first place?
i say keep the teg for a little while, after youve weighed ALL the pros and cons.
your teg (im assuming) is paid for, decent on gas, reliable. why change?