Hi, I have a T8 and T8-s and they are very good boxes I use both wired, as my router was very close to them. I have used them with wifi and found the speed was not as high as a wired connection...but still worked great.
I suppose its how far your router is from the box.
Driodbox are or have released a new T8-s which has more memory and a few other things. Best to check out droidbox main site and see.
I can't comment in the minix neo 8-H, let someone else do that.
Good luck on your decision.