+1 that HV unit cost me dearly this year on 35Mhz.
WR are supposedly exchanging it for me for one of their newer offerings, I'll be doing extensive range checks!
I've been using this cheap ass ($20) regulator from hobbycity with great success the past few months on an 8S MiniJoker, it's good up to 10S.
Out of stock at the moment though
No glitches yet, although I've seen users on HC post that the voltage regulation on some of their smaller units isn't perfect. I've encountered no ill effects but I haven't attached an oscilloscope either.