Difficult to answer. I have the Note 3, 8 and 10.1-14, which replaced the 10.1-12. Of these devices, my preferences in order: Note 3, 8, 10.1-12, 10.1-14.
I rank the Note 8 higher because of size and performance. Holding it for an extended period of time is easier for me than the 10.1 devices. The 10.1-12 for me had fewer issues than the 10.1-14. The issues are aggravated by the OS that came with the device and its subsequent update. The Note 8 running Kitty Kat has a pen alignment problem that was not there with previous updates. Additionally, Kitty Kat limits access to the external card. These issues are addressed by rooting and making subsequent modifications. In the past, rooting was for me. In the present, rooting is not of any interest. Problem wise, the 8 has been trouble free. My only complaint: 32gb is so much better than 16gb.
The 10.1-14 issues: external card access, and light bleeding on the corners. The startup delay and Bluetooth connectivity issues seem to be alleviated with Kit Kat.
The Note 8 looks dead in the upgrade harbor. The 10.1 looks viable for now. So if you want the pen and size is not a factor, the 10.1 is better, as we all want to stay current as possible. Incidentally, between the 8 & 10.1, I use the 8 much more on the personal and work environments. Both have the same applications, with the 10.1-14 also having Hancom installed, though rarely used.