One of the best tumblers out there for the price IMO is the Berry tumbler, All American made except for the motor, which no manufacturer here makes. And if you buy it from Cabelas it good for life, as they have a customer satisfaction guarantee.
Another plus is its very quite.
Very quiet and very light. I have had my Cabelas tumbler for five years now and it works like the day I bought it. I especially like the large capacity.