When originally searching for a wet-tumbler to fit my "new-to-the-sport" reloading adventures, I looked very closely at the Thumbler-brand.
Recently, I'd posted questions about reloading equipment. Was interested in knowing what the community suggested on particular items, and was directed to the STM Website for their Rebel 17 wet-tumbler, (StainlessTumblingMedia.com). Since Christmas, I've tumbled literally thousands of cases ranging from .223, 45 ACP, 44 Mag, 9mm, and 300 Win Mag brass. Also, I was told to order an extra belt for the machine if some catastrophe ever ensued - although, it hasn't skipped a beat - I went ahead and ordered a couple of extra belts and a seal for the tub itself. It's very solid-built, has a heavy-duty rubber-encapsulated liner within the tub, and appears to have the ability to replace whatever particular part or piece may wear out over time with a couple of hand-tools.
I believe the Thumbler and the STM are very similar in many specifics. In my case, I needed a complete setup to begin this experience of reloading... and, STM offered a package deal that contained everything that would fulfill my needs. It's been running every other day since it's been received - again, literally. And, I've been extremely happy with the device overall.
Hopefully, I've offered some insight as to my experience with this particular wet-tumbler. Unfortunately, I have no experience with any other product - but, please do take a look at the STM Rebel 17 for consideration in your search, as well.
Respectfully,
Skinnable