I have used Mystery (and quite a few others!) with no problem.
The only advice I can give is with any cheap(er) ESC is that being built down to a price treat their Amp rating with caution. Give yourself a 'real' 25% headroom. In other words use a Watt meter to check what the plane's max current really is using an over size 'test' ESC and size the 'working' ESC accordingly.
As a process this may sounds a bit 'over kill' but it does virtually eliminate ESC failure.
The 2 100A ones I bought which failed almost right away when I took them apart there was so much spatter inside it was like someone was arc welding in there. Some of the spatter was loose so I gather pieces shorted it out, needless to say they wouldn't warranty them so I will not buy another one.