Sadly, at this very instant, it’s a bad time to be buying a vesc-based ESC unless your budget is healthy. Today’s vesc-compatible landscape:
Established:
Trampa: The best quality/bulletproof but you pay for the privilege
Enertion Unity: Great but sold out
Enertion Focbox: Still viable but not the easiest to find
Flipsky: Poor QC/high failure rates
ESCape: Solid AF but hard to find
Newcomers:
Torqueboards: Established quality vendor, will be worth the wait given TB’s history/still in testing
Maker-X: Good value but jury is out on quality (I am using a dual from them successfully ATM, though)
neoONE: (based on the Focbox): Hopes are high but no feedback yet as still in production
Zesc: Looks interesting but unproven. But check this out:ZESC v6c vesc variant
(Did I miss anyone, guys?)
If I HAD to buy something right now: Would get a pair of Flipsky 4.12 singles off of eBay and run them until the market sorts itself out over the summer, and then keep for backup.