need to get my transcripts evaluated for TN

Hello, I have several years worth of comp.sci Work experience along with dozens of comp sci courses I've taken in college which I'd like to get evaluated to a Comp Sci degree.

Can someone recommend me names of course evaluation companies that INS officers are used to seeing? There seems to be quite a lot of them out there, but I want to go with a 'known' firm.

You need the completed degree or diploma for TN purposes. Cobbled together equivalents won't be accepted.

WES and UofT are acceptabel eval firms.