This is from 2 pages back, but another thing to keep in mind about Zoomhash, (and others? How many or which I am not sure but I know Zoomhash) is they are supposed to handle the warranty claims according to Yoshi.I do not know the qualifying factors but I am sure if they are supposed to handle warranty they get a better discount.
Yoshi said Bitmain would handle my case but that is a whole different story which I will update in a bit.

Just keep in mind where your warranty is being handled, the people you will be dealing with, where they are, and (if you will have failures) where is the most likely point of failure. Of course how long is the warranty and what is the warranty reputation from existing users who your use will emulate. There is nothing wrong with learning by copying the best and back on topic sincerely research the service experience of others.