B3's don't have a large fanbase, they have a cult fanbase.
R32's are fun, but the wheelbase is so short with a lot of power + a track they become a top.
B5 S4's are nice for a comfortable, modernish, and fun/quick but you have to be meticulous on maintaining them and the fanbase is full of spoiled punk asses anymore.
944 Turbo will nickle and dime you.
I think you should combine your Miata and RX-7 into one and get a 13BTT to put into a miata.