"Bought a A-R1, a single Lot-O-Tumbler, and two pounds of petrified wood w/ grit. So far really happy with the purchase. I'm a hobbyist and had a three year old tumbler and a 30ish year old vibratory polisher (different brands) that both died a day apart! I got the A-R1 going pretty much out of the box, and after a bit of set up, it went to work. With the Lot-O-Tumbler, I glued it to a single 70 pound decorative paving concrete block that I got at a home improvement store and set it on some 1 1/2" polystyrene insulation. Much quieter than I thought it would be. It has more action than my last one so will have to adjust a bit with timing and rock mix."