Best rock tumblers

Top pick: Thumler's A-R2. It's the tumbler hobbyists graduate to — a heavy-duty rotary with two rubber barrels, a grit pack and 5 lb of mixed rock, so you can run coarse and fine stages at once. Built to run for days without complaint.

Who the others suit:

• Thumler's A-R1 — same rugged build, one smaller barrel: right if you polish modest batches and want a quieter, compact setup.
• Thumler's Model B — the big 15 lb steel barrel for serious volume and large stones.
• Tumble-Bee 2 x 2lb — twin rubber barrels, a good mid-step between toy and pro.
• National Geographic Hobby — the easiest start for a curious kid or first-timer.
• KomeStone K1 / Dan&Darci kits — budget-friendly all-in-one kits with grit and starter stones.
• 45C Rotary — steel body, 4 lb barrel, for steady everyday tumbling.

Rule of thumb: rubber barrels are quieter and last longer; buy the biggest barrel you'll actually fill.