Well 1990's are a good year for sure, i have a 1990 turboII, but the non-turbo rotaries are alot more "dependable" or some junk like that... :P
Over heating issues? Rotaries get very hot yes, but if you keep the car in goodshape it should never OVER-heat. I've been told that rotaries get up to 1200 degrees.

I think that's autocross though.