I've bought from Salgado a number of times and everything was healthy. The only fish I've lost from them were a couple leopard wrasses that dove into the sand in my DT and never came back up. But I think that's more about that type of fish than it is Salgado.
I will admit though that I've never had anything shipped from them. I live in northern NJ so the first time I bought from them, I had them deliver to me. Everything showed up same day and looked good. I've also gone to their store in the Bronx 3x - everything looked pretty healthy and I always wind up buying more than I was anticipating. It's great if you're local - if you walk in, you can score better "in store special" prices.