TIGER PAW "Tranquility" (Magnetic Bearing Repulsion...) Any Good?

@mre28m5   Wow, you have some really sh---t dealers in your area!
Wouldn't work on your table because you replaced your mat...what a prima donna! 
Like I said above, I will be watching the various Tranq users and their posts over time, I sure would like this mod to be as great through time as everyone is saying it is now. Price for a mod with that kind of upswing in SQ is really quite reasonable, IMO. We shall see though.

I have a great deal of experience with this as it is a key feature of my turntable bearing design. Relieving the platter of much of it’s weight reduces friction and thus make the motor work less. This frees up motor torque towards driving the friction in the record groove. Subjectivity less bearing friction often results in a "faster" sound as described above. A test for this is to spin the platter to 33.3 rpm without the belt and time it till it hits zero, then do the same with the magnets to measure the hopefully lower friction. My tables on a good day will run over 7 minutes for example.
Regards
Bruce
Anvil Turntables

As far as stray magnetic fields are concerned there is a shielding effect when using opposing magnets but you still have stray fields And the only thing that will disrupt them are iron and nickel alloys.  Certain cartridges near moving magnets can hum but I have NOT seen this design and the manufacturer probably accounted for it. 
Also, regarding speed you will have less belt pull and wow flutter and drift should improve with ANY controller.