Window lift motors

My Century seems to be in need of 4 new power window motors. When I found some at Partsamerica.com, there were several choices and I am wondering if any one is better than any of the others. What would you choose between a new Cardone Select for $55 (lifetime warranty), Reman Cardone for $29 (lifetime warranty), Siemens for $37 (lifetime warranty), Dorman for $50 (1year warranty), Standard Motor Products for $64 (1year warranty), or ACI for $43 (lifetime warranty)? Opinions?

What I've found with several I've replaced is that Siemens is the OEM supplier for many GM models. The recent Dorman units I've installed are Pacific Rim imports, and seem to be of average to reasonable quality. The Standard and Cardone motors I've seen are simply re-boxed and re-labeled Siemens motors.

That said, everything changes, and aftermarket suppliers often switch to the lowest bidder when the next batch of parts is ordered.