Best Boards of 2017 IMO are:

H270-P and Z270-P by ASUS

and Biostar TB250 and TB350.

TB350 being based on AM4, goes well with AM4 X4 950
TB250 being intel, goes well with G3900 (since its cheaper than the kaby lake counter and you can run win 7 or 8 on the skylake G3900)

TB250 Unboxing
https://www.youtube.com/watch?v=A-nzCHtRE98

TB350 Unboxing
https://www.youtube.com/watch?v=bYCtbZRXDAA

TB250 Build
https://www.youtube.com/watch?v=Wlxxzax7MgY

I have 4 rigs with Z270-P and it never caused any problems.
It is also well-documented and there are lot of guides how-to at Youtube

Thanks for your support.