I kmow I have had a thumblers for 20+ years now
I bought this one when I started and have never looked back. It holds more than I can count even when half full. I paid about $150 for mine. No issues and would get another....................tw
http://www.harborfreight.com/18-lb-vibratory-bowl-with-liquid-drain-hose-96923.html
They also have this one. I checked it out but I like mine better.
http://www.harborfreight.com/5-lb-metal-vibrator-tumbler-67617.html