On various brands, I've tried Anchor, aftermarket poly (dogbone only), DEA, and Westar. DEA and Westar aren't worth a damn. DEA apparently doesn't check hole spacing or diameter, just all around horrible quality. The one Westar dogbone I got looked like it was designed wrong, different configuration of rubber than OEM, basically offered no resistance to engine torque (the dogbone's only job).
The poly mounted dogbone from Rodney works great, no issues there.
Anchor is usually very low priced but it looks like they use OEM tooling, same casting marks etc. On one Ford, their transmission mount hole spacing was slightly off (had to be drilled out a bit) but overall I've been happy with their products. I have Anchor mounts on my 3500 swap right now and they've held up to the 3500's torque so far (9,000 miles).
[This message has been edited by masospaghetti (edited 05-20-2015).]