I've bought a whole bunch of V-lock and gold mount plates from China on ebay over the years, and for the most part they have been great. The only issue I do remember was that on one particular type of v-lock plate the IDX batts we had wouldn't lock onto it properly - they were getting caught on something at the bottom of the plate. Some were fine though. As Michael said the gold mounts are usually a more robust design. Also the D-tap connectors on most of the plates don't have the little tab on them that prevents you from jamming it the wrong way, so you just have to be careful when plugging in that the polarity is right. They are not regulated, but if that's a concern 12V regulators are very cheap and pretty easy to solder in (though you woudln't want to do this with a 24V supply). I've rigged them up all kinds of ways, usually with a D-tap splitter box (again, sourced from ebay) to power multiple devices - tv logics, teradek receivers, colr boxes, etc. Been using them for years on long and grueling jobs and never had any damage caused to any device. Just be careful you're plugging in your D-taps the right way round.