Rock Tumblers ?

ceagee thought this was worth mentioning said
6

Wondering if there are some rockhounds out there that could help. I'm interested in getting started in polishing up some rocks. I know that the kid versions and some cheaper model tumblers will break after a few uses or won't really do the job.
What is a good model to get started with ? How much can I expect to pay ? What does it take to upkeep the machine ( does one need to be mechanically oriented ? )
Any other bits of advice for someone wanting to get started ?

Thank you !