I suppose If I were to go with a T5 I would use Astro. G Force has a bad rep, and Pro Motion uses G force parts.. The most I've ever seen an Astro rated for is 450 lb ft, though. Just don't ever make plans to make more torque than that and you'll be fine. If you're going to build a monster you might want to explore other avenues..
They actually sell two different models. One is rated for 485tq and the other for 575tq. You are right about G Force, their reputation has gone down. The only reason I bought the one I did was because it was assembled in 2004, by Tony at Astro. The guy I bought it from still had all the reciepts for it. This was before Astro was building their own and before G Force's quality went down. Its already been said a few times in this thread, no one can really talk badly about Astro's T5's based on first hand experience. Only good things have been said.
Joe
