Reply by Tennessee

I have two locking, two fixed on all of the tools I have with wheels. Scroll saw, belt sander, jointer, lunchbox planer. The fixed hold just fine, and the two swivel with brakes are good for holding. Just have to put them on the base so that the wood infeed is against the fixed so they don’t move. And I use HF wheels, or NT wheels, cheapest I can find. Never had a failure yet, unless you count the wood breakage of the base on the jointer, but not the wheels fault.
One thing I will not put wheels on is a grinder stand. Just too dangerous…

-- Paul, Tennessee, http://www.tsunamiguitars.com