just get a rupes 21. dont bother trying to hunt for one of the other 21mm polishers. Or you can play the waiting game and hope Griots comes out with a 21mm polisher since Maxshine has one now.
One thing I do have to say - the china machines are a heck lot more powerful than the Rupes. But...
I was actually thinking about comparing the power of my 75e vs my GG3. But I ended up selling the GG3 (finally). Been trying to sell it for some time now.
I literally used it once and decided it was useless and put it up for sale.
The 75e has MUCH more power. It's def worth the $200 markup...
I noticed this problem before I even started using it. It took me 5 minutes of breaking it down to realize that not only does the shroud contact the backing plate but so does the counter weight. There needs to be a spacer to space out the backing plate and the machine.