"Superior steel" is relative and the price increases are significant with the newer super steels. I hope you are happy with your choice. For hunting situations, D2 is all you need and it will hold an edge a long time once you have it sharp. Again, your money, your choice.....
I have been quite pleased with my ZT0770CF in Elmax, but I wouldn't recommend this knife for a "hunting" knife. There are pros anc cons to Elmax. I view the whole steel discussion as one of very slight increases in value with some fairly significant price differences relative to the more common older steels. I still like VG-10 and it holds and edge long enough for my needs. What can I say?