I've ordered many fish from LA. Six-Line Wrasse, Orchid Dottyback, Flame Angel, 3 Blue Reef Chromis, Yellow Tang and Burgess Butterfly. Never lost a single fish from there. They all sat in a QT tank for two weeks while I monitored their health and eating habits. The only treatment they received was Tank Transfer Method simply as a precaution. I never saw any signs of ick or any other sickness but all of my fish go through TTM just for sanity sake.
LA is the real deal. Typically their fish run a bit higher price then my LFS but the fish are always healthy and vibrant. The two week guarantee is also nice to have and most LFS don't honor something like that.
As much as I love supporting my LFS, I rarely buy fish from there anymore because I have about a 50% survival rate vs 100% from LA. I'm not sure if everyone has trouble with their fish or if this is isolated to me.
Finally to touch on acclimation, LA sends directions for drip acclimation. They run a pretty low salinity, about 1.017 from what I have tested. I try to get the salinity to atleast 1.022 before I drop them into the tank. I try to do this in about an hours time because of the ammonia buildup in the bag water.
-Happy Reefing
