X99 Motherboards , is it worth it ?

[Serpent]

I am really confused of what to choose, the X99 new motherboards with a Core i7-5820K or just stick with the z97 and core i7 4790k .. i have 2 gtx 980 , with a good chance of adding 2 more .. any suggestions ?

Thanks In Advance ..

[radix]

doesnt matter so long as you have enough pci-e slots.