Don't forget those Turbo II's are notorious for blowing apex seals... which, unless you have the ability to do a motor rebuild yourself, basically means tossing the motor and getting a new one since the repair labor is so high. That RX-7 may end up costing you a lot more than the WRX.
If you really want a 7, and it's going to be a daily driver, stay away from the turbos... yes they rule, but they don't make great daily drivers.
Get a non-turbo 2nd gen.