Thumler Model B
I have had no experience with the Frankford but I have been using the Thumler Model B since the late 1970's, approximately 38 years and the only thing I have ever replaced is belts and of course the medium. It doesn't see a lot of use these days but in the 80's and early 90's my wife and I were both competing in handgun competitions and I was averaging reloading 20,000 to 25,000 rounds a year so it has certainly stood the test of time.
One thing I find is I generally seem to tumble my brass longer than the times I see others claiming with their vibratory tumblers.
Although I have never used it the Thumler also provides the option of tumbling rocks in water should you desire.
Good Luck with the decision.
Phil
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