I measure the fish based on their total size. It is not just most of them that goes in a tank, it is all of them. I PREFER smaller fish as I love to see them grow. It is amazing to recall when you bought a fish then after a year or two be able to say remember how tiny it use to be.
While not getting a medium size Achilles as ordered, based on the difficult nature of procuring this fish as well as their not so tolerant shipping condition I accepted the large one without complaint. It arrived healthy and that outweighed my size concerns. I have the space to comfortably house the fish so I guess that further alleviated any possible complaints I could have. Over-all, while size to me is a concern when getting my fish, my greatest concern is their health both in the here and now as well as the immediate and long term future.
While the Tangs I received were much larger than I was expecting to get, they are both healthy and in suitable environments for their size.
I will say that despite the sizing issues being off with the fish I have ordered, which to date is somewhere around 6 from LA, each one has arrived in extraordinary condition despite the shipping stress.
A couple were a bit neurotic, for lack of a more fitting term, through acclimation every one of them has been healthy and eating within a few hours.
While I have had some issues with LA due to sizing or shipping issues, the fish I have received are all healthy and happy and that is the most important part. The corals while all of them have arrived broken in some way all appear to be healthy and adjusting to the tank. All of them have good polyp extension and no apparent STN/RTN as of this writing.
Customer Service has been about as good as it can be with a customer that can be as difficult as myself. Yes I know I can be a royal PITA. At least to this point I have been extremely thorough in exactly why I have been dissatisfied with my shipments. It has to at least be better than the customer that just says I don't like it, it isn't what I ordered, I just decided I don't want it.

That has to at least count for something. Well that and the fact that I use full, usually grammatically correct, sentences with photo evidence.