In that case here is my list for everyone to see incase they were interested. If it causes any problems i will gladly remove it. Keep in mind these are just the ones that i have either worked with personally, talked to, or knew through others working with them. Based on my opinion, however if listed here you really can't go wrong with any of them.
Kenny's Discus (Kenny Cheung) -
http://www.kennysdiscus.net/
-Amazing guy and supplier. He imports Asian discus from "Forrest" and Chan Kok Eng, and then resells, gets some awesome quality fish. By far the best i've ever seen/owned. I will go to Kenny first always and if he doesn't have the strain i'm looking for move on from there. Customer service is the best, he will call you to check on the shipment, super nice guy. Prices are very fair for the quality of fish you get. I've never had fish try and pick at the siphon hose during a WC before, until i got fish from Kenny.
Central Ohio Discus (Mike Beals) -
http://www.centralohiodiscus.com/
-Another guy with great fish, heard nothing but the best from him. He is also an importer for the most part. He imports Asian discus as well but from Jeffrey Yang, great quality and price.
Discus Hans -
http://www.discus-hans-usa.com/
-He mostly does wholesale, and stocks many LFS around the US. He has a store locater on his site to see if any are close. However i find that his discus fall to a lesser grade in LFS care. You can still find nice ones, but if they've been in LFS care for a while they definitely don't reflect the quality that is Stendker Discus. Hans is a really nice guy and might be willing to work with you on getting some fish straight from him. I know he does some orders for people without an LFS that supplies his fish in the area.
Discus KC (Jack Taylor)-
http://www.geocities.com/kc_discus/
-Again another nice guy, real nice. He is a true USA breeder. He doesn't import, he breeds all of his stock himself. Doing that though his stock is not always, in stock. As he does not have a constant shipment schedule like an importer. You just have to contact him to find out what he has. He has a reallllllly nice Mandarin Passion red strain, but the wait list right now is at 18 months.
Green Country Discus (Andrew & Angela Richardson) -
http://www.aagreencountrydiscus.com/
-More true USA breeders, they breed their own stock. Again they arn't working with many strains or colors but they have a couple.
Gulf Coast Discus (Dan) -
http://www.gulfcoastdiscus.com/
-I believe Dan imports mostly. He has some nice fish from time to time. He is not always as stocked up as others but he gets some nice fish. He sells plants and other tropical fish too. He is a reliable supplier of true Altum Angelfish.
Again, this is just my take on them. If you see them here, i would recommend them and wouldn't hesitate to buy from them myself. I have bought from Kenny and Hans and they are both stand up guys that love this hobby. You can't go wrong with any of them. If you don't see someone listed here, thats not to say they can't be trusted....i probably just havn't had contact with them personally or either don't know about them. I'm sure there are other good places to buy out there.