There are some LFS's that carry & sell good quality discus, but they are the exception rather than the rule.
Most don't. House of Tropicals MAY be one of those few rare ones that do a good job with discus.
Most don't know how to care for them properly, and really aren't concerned about that, since they're relying on getting quick sales for them. And most are on a central filtration system, exposing their discus to all the pathogens & disease in their other tanks.
But it sure wouldn't hurt to ask your LFS where/who they get their discus from, whether it be breeders or export sources in overseas countries - might give you some comfort... or not. Let me know if you wish.
Also, most LFS's only sell younger, smaller discus due to their lower pricing... but as we've already discussed, that's not the kind to buy when you're starting out with discus. Sure, a 2"- $20. discus is cheap, but it's not cheap when it doesn't survive more than a couple of weeks.
On a brighter note, if you don't want to take any chances whatsoever, and get the size & strains you really want, you have (arguably) the best, quality discus supplier in all the U.S. not far from you - Hans' Discus, in Baltimore. He's a major, very highly regarded importer/supplier of superior quality Stendker discus from Germany. He's also a long-time sponsor on the simplydiscus.com forum, where you can look him up, or google for his website, and have a look at his discus gallery. You can't go wrong buying from Hans.
Hope this helps.
HOT runs individual air driven sponge filters for each each tank so there is no cross contamination on that end. What specifically should I ask for? Like do I want import or home grown? Those kinds of questions so I can gauge if they are any good or not. Their pricing is less then Han's, but they don't have such a beautiful variety. I looked at some of his pictures. It is amazing. $100+ is a bit too rich for my blood. HOT does have full adults that I believe they will sell, they are just kept in their display tanks. I know at least one of the guys there used to own a store in which he sold discus, however I don't know how long his store lasted lol, or the kind of care he took with the tanks. It was a while ago though. Is a 3"+ too small?