If this helps...
Booxtor model.
Playing with it for three weeks.
No loops at all.
No problem with the battery. Last two times I charged it, it was at 14%. The moment the pop-up warns you to charge it.
No problems with Wi-Fi. Except when it goes to sleep mode, I had to turn it off myself. So, in my case it stays on when reading.
I've been reading the last year in a KPW 2 and Kobo Aura HD. The battery lasts a little less than in those two eReaders, so to me nothing out of the norm if you take on acount that T68 runs Android.
The only thing that I'm not happy with is the buggy screen touch. When this is solved it'll become my favourite reader of all.
In my case I've noticed that not all the apps respond the same to the touch. Coolreder (not the Onyx version) and Kindle app respond to soft touch. Most of the times Onyx apps (OReader and the other two) need a
harder touch. Similar to the differences I've notice between PW2 and Aura HD...