+1 for the MT-4 for a budget setup. For new MX-V pricing you can just about get a used MT-4. I also like the MT-4 since you can still run the older (cheaper) fhhs-2 receivers as well as the fhhs-4. Something you can't do with the newer radio's

If you go to your local track there will probably be someone there with a mt4 or mt4-s if you want to see how they feel. Some tracks/hobby shops also have consignment setups and you might find a used radio there.