I never bought/tried a single disc other than the stock that wouldnt hold my new power, but when I bought my dual disc several people led me to buy one from Kentucky clutch. Quick shipping, and I believe they are usually a little better priced. The guy I talked to was more knowledgeable on dodge combinations for power, but if you know about what HP level you want to hold, and tell him what you want to use the truck for, he can help you pick one out.
A full dual disc ceramic button clutch setup with flywheel was ~1350 shipped two months ago. I guess it wasnt that long ago they were less than 1k.
http://www.kyclutch.com/
1-502-955-9173