I recently picked up a Cort M-Custom that's getting more airplay than I originally thought it would. It's outfitted with a Fishman Bridge and a Seymour Duncan JB/59 combo but the tuners are kind of crappy. I'd like to get a pair of lockers for it but don't want to sink too much $ into the guitar since I only have $450 in it to start. Any suggestions? Can I just get any set of sperzel, schaller or hipshots?