So far so good. Ive got two of the Elecom Huge devices. Ive got one at home and one at work. (actually ive got three elecom device as i still have and use the elecom deft) The wrist pad has held up so far. (Image below is after a year and a half daily use)
My only beef is that is still goes through batteries fairly quick. By comparison i couldn't remember when i changed batteries in the M570 but its probably every month and a half or so for the Huge. If the device is left on while the computer is off it seems to drain the battery and i suspect that this is the reason that I have to change so frequently. That said, its no love lost for me I still love it! I have toyed with the idea of getting a wired device though.
It does seem to have a few issues for me. It seems to lose connection periodically. Initially i attributed the loss of connection to other hardware but now that i have used the multiple devices on several machines it follows the device. It may be some sort of frequency interference.. or maybe driver issues im not sure. I assume a wired version wouldn't have this issue. (a simple toggling of the power or 'toggling' of the speed settings usually gets it to resume connection) I also do notice some issues with click and hold actions, but i'm not sure if that user error or device driven at this point. I'm leaning to think that its device driven given the other connectivity issue. It also happens on occasion that it reverses direction, but that usually happens only for a second when i first grab the device quickly while the device is at rest. I assume that problem is that the device initially struggles with establishing direction. All those are reasons i've toyed with the idea of going wired to see if its the wireless feature causing issues. These arent deal breakers for me though. I still think its worth it.
If you are looking for a TBE replacement this is still the best bet.. unless you want to pay the ridiculous prices for the TBE.
Glad you liked my posts about it. I need to update it with these other things ive found.

CADnoob
