Where did I see bad reviews for the Thumler? Several places, including this very thread. A rusted out interior is a bad review as that is not a good thing.
The rebel needs a push start. What is this? 1902 where you have to push start stuff?
If you want to clean brass, from small amounts to large amounts, without any hassle then get a bigg dawg. They just work.
Thumlers aren't cheap and the rebel isn't cheap. Nor are they best built unit on the block. I don't work for Bigg Dawg, nor do I shill for for them. Their equipment is a lifetime investment and is worth every penny plus some so when the subject of SS cleaning comes up, I always mention them.
Buy once and be done. Additionally, with the Bigg Dawg you can buy additional drums to suit your needs and run the same frame/motor. I use a drum that holds 25 lbs of pins, 22 lbs of brass, and 3 gallons of water for my side business. I use the same frame and motor to run much smaller drums for my personal brass.
I know I'm way off topic here, as what I am talking about is not what the OP asked about and for that I apologize.