i'm also looking in to their 6262 turbos. i am still deciding on brand. i found some issue people had with comp but they took care of it. it seems they had quality problems when they started with having too much lag and no power, but now it seems they make very high quality products. i know they'll make you a fully custom turbo too for your needs if you give them a call. i'm thinking to do that and see what they recommend and then buy them through a dealer here.i found problems with pt turbos too, but with much less happy customers than comp turbos.
look at this beauty 6262 turbo i found on one of the forums. billet back cover and center if you order oil cooled only and it's sexy as hell. the guy has this on a 1.7L audi with .82 a/r and he sees full boost at 4800 rpm. i was debating if i should go with .63 for turbo lag, but it seems like .82 is not all that bad either. on my stroker and e85 i should see full boost by same rpm if not lower. that plus their tial v band housing=sexiest turbo out there. now i'm not sure if i want to put turbo blanket on. don't want to over all those beauties lol.
built in restrictor
Threaded oil drain instead of the typical flange
their oil and water cooled here