Good Upgrade From a Z87 Sabertooth

[Dedpewl]

I was wondering what was a good motherbard to upgrade to after using the Z87 sabertooth, i was thinking of the MSI x99 and using aa 1080, might also need a new power supply as well, pretty sure this is the one i have now so might need suggestions as well so it's compatible with GTX1080

 

[HEXiT]

it should fit as there all keyed to a standard shape.