hsrminer def gets more hash, but I've found it unstable on one of my rigs. See what works for you the hash difference between klausT and hsr is about 200-300 if you have -i set properly with ccminer. I've done power tests - hsrminer cuts back about 2-3w per card over klausT - that's the difference for me. The 1% dev fee is much less than the extra few w/hr ccminer is using. I lowered TDP 100/90/80 and the watt difference between the Miners is important. Keep in mind TDP increases hash too about 10 hash per 10%TDP.

Do your own tests but I hope that helps. Gonna spend the next week continuing to fine tune in spare time.