Installed one, in a very upscale office setting where it would not really see much use or abuse. Not much of an opinion as it went in three weeks ago, and hasn't had its 6 months of good service life yet , like the TT's.
This guy was told, charge it only when it is dead, use it after it is fully charged, do not put it on the charger in between, do not drop it, abuse it, or mistreat it in any way, and it MAY last. If not, we will not take it back for a trade in. If it has problems in warranty, we will have supplier ship a new one and provide document for you to return ship the bad one.
You do not always get what you pay for, but you never get what you do not pay for.