What is the best version of the 980ti cards?

EVGA Hybrid.

As stated, it's the best and it's worth it once it comes back in stock. WHY?

Jayz2cents reviewed it and ran it at 1480MHz with the fans being very quiet and the GPU was about 50degC (compared to over 80degC with air cooled cards).

So it gets the best performance while also being very quiet. That's worth an extra $100 (15%) over the cheapest models.