Good luck finding an RX2 or RX3 around here that isn't rusted, or cheap. There was one for sale, that I sadly missed out on
FB/SA's are easy to find, but 75-80% are junk anymore. Even in top condition, they're pretty cheap. The only downside is a limited aftermarket compared to the FC/FD. In SA/FB's, look for rusted bins, and clogged weepholes.