I've got a T68 with a T68 plus on order. I needed a device with Bluetooth that I could convert into a tablet, so I could run
OruxMaps and pair with a Bluetooth GPS receiver. I needed to be able to use my fingers (not just a stylus) to use it.
So far I'm generally happy except the T68 needs more CPU power and more room for apps. I have remapped the front button to be a Home button because the tiny Home icon is too fiddly to use on a regular basis. I am using the device as an e-book reader with a variety of software: AlReader, Orion Viewer, EbookDroid.
When the T68 plus arrives, I'll compare the two. I expect no performance difference, but at least more room for apps.
That's my $0.05 worth! Cheers, Warren