My #1 priority is screen size. BUT as someone who likes to own their phones till the wheels fall off I also like updates.
Nexi are guaranteed to get upgraded to the next 2 generations of android which is sweet. (the fact that my TMO Nexus 6 is now on day 48 and counting waiting on the 6.0 OTA upgrade but obviously this isn't either TMO or Google fault "for this I blame Obama"
So the Nexus 6 with its biggest screen and stereo speakers was a dream.
Obviously I think that the 5.7" screened Nexus 6P is ludicrously small and verging on a toy instead of a tool!
BUT I will always look at a Nexi phablet when it comes to a new phone.
Then again battery life is my close #2 priority and LG V10's removable battery and ZeroLemon's 8500 mAh battery case that's built like a tank is really appealing.
HTC's O2 flagship for 2016 is rumored to come in 5" and 6" versions with duel speakers, 4,000 mAh battery and water proofing. That is intriguing as well.
And of course the MediaPad X2 by Huawei (importable) with its 7" screen and 5,000 mAh battery is alluring as well.
So bottom line: Nexus is always first choice BUT if Google ever drops a phablet offering then I'm gone instantly.
Phablets forever!