I have some M20 on order..prefer the lower power draws...much better bang for your buck...less risk if one fails but same efficiency...MUCH cheaper initial cost.
Also looking for more used M10....
Pangolin's are BOSS and will be for years.
But shhhhhhhhh keep praising & pushing the expensive and inefficient and unreliable ShitMain's and Inno's. Avalon? Schmavalon!
I also prefer the M20 and possibly the larger M20S which has the same efficiency. The S17 could be a little more efficient but its way more expensive, AND power hungrier and noisier.
Don't praise Pangolin, those units are made by
MicroBT, and their model name is Whatsminer, not to be confused with the re-seller.