The four known to be dead reliable are:
- VCMuzzler II (swappable resistors)
- MaxMuzzler (potentiometer)
- S-VCM Controller (microprocessor)
- VCMTuner II (microprocessor)
All the others are rip-offs and copycats of variable quality. You'll undoubtedly be able to find that one guy who says Brand X is both cheap and awesome. I don't find those compelling at all. Get a good one and don't waste your time and money.
