I've been there once, and ordered online once. When I went in, the guy seemed like he lived in a constant state of swamped. He was plenty helpful and friendly once it was your turn, but at that point he was there by himself, and there were a bunch of customers in and out. While I was there a bunch of people came in and picked up online orders that he'd apparently pulled for them ahead of time, so that's what I plan on doing this time. For grains in bulk without ordering a pallet, I don't see how I could do much better than Hearts. Plus, the wife and I have friends we don't visit often in Orlando, so combining the trip makes everyone happy.
When I ordered online, I got a new auto-siphon, some dry yeast, a few pounds of specialty grains and leaf and pellet hops. I was perfectly happy with everything but the hops, which came in a twist-tied plastic bag. The leaf hops (fuggles) were kinda plain smelling, so I just figured I just wouldn't buy hops there again. Now, the hops could have been fine, but I'm spoiled on the quality of hops I get from morebeer and hopsdirect, so take that for what it's worth.
I'll certainly update this thread with my impressions after going, whether it ends up being a group buy or just me.