I've gotten several pieces from liveaquaria in the past; I like to use them for larger colonies/pieces over frags, I find that their frags can be a little on the high side price wise.
I've also ordered from fraggle reef, and must say, I was impressed! I'd never ordered from them before, so I was a bit tentative to place a large order. for what I think totaled to about $130, I got a torch frag, a frogspawn frag, and a chalice, and they even sent a free two-headed bright green candycane frag. the torch and frogspawn came in much larger than I'd expected, a good 2-3" fully expanded, and very healthy. the chalice had some minor tissue recession on one edge, but was bright and healthy and re-grew that tissue very quickly. everything was shipped quickly, and packaged well. I will definitely be making another order with them, hopefully soon.