Mobo makes absolutely no difference whatsoever performance wise.
Make sure you get the right socket (LGA 1150 in your case).
If you don't need to OC don't get a Z97 chipset (although you shouldn't have bought a K CPU in the first place.
Check whether the mobo has the desired spec (form fact, # RAM slots, memory speed, # USB 2.0 / 3.0 front panel and rear, # PCI slots, # SATA connexions, SLI or Crossfire capability) and get the cheapest possible from a trustworthy manufacturer (MSI, ASRock, Gigabyte, ...).
Without OC this one will give good performance:
http://pcpartpicker.com/part/msi-motherboard-h81mp33
If you wanna OC this one will do the job:
http://pcpartpicker.com/part/asrock-motherboard-z97pro3