Beware that even with your FWD tranny in neutral your differential might make the other side tire spin backwards when you spin yours, so basing a "drag reading" on that could be futile. The "best" way would be without a CV axle in there but then you wouldn't have the preload on it from the axle nut.
I've had tight, noisy bearings, loose quiet bearings, and loose, noisy bearings. Whatever.
Also old school bearings with .0010 of play built in on purpose.