I have tried many of the motor mounts out there. Alien Drive (old version), Torque/DIYes v3, and Enertion current (Aluminum/Carbon).
They all work. I’d love to get my hands on more of the v3 from DIYes as i love the adjustability, but they can be fiddly to setup correctly (partly why he went to v4 and simpler/cheaper to make i’m guessing). Ease of setup i’d have to say the Enertion ones are best. Adjustability the DIYes v3. The ADS (old version) worked great, but needed a lock screw as it liked to rotate (yes i could JB Weld, or loctite, or … I did none of those and it was stolen before i could “fix” their lack of locking screw design issue - but it was a gap in design that almost everyone else offers.)
I’ve not tried some of the others out there, but you can’t go wrong with either. If you are in Australia i’d probaly go for the easiest/cheapest to get. Unless you have a challenging deck that needs uber adjustment (drop deck or something) - they will all work!