There is nothing wrong with SR-77's edge retention, that I can insure you! Is SR101 better, very slightly, but not enough to write home about. It is stronger, no way.
I can chop up 2 deer & make many fires with SR-77 without a re-sharpen. This IMO is all that is needed for any survival/serious hunting knife.
I also personally think Scrap Yard knives with it's superbly heat treated SR-77 is the best in the world when you add all the features for what one gets for their money$. I will even stick my neck out & say I prefer their ideas/designs etc over Busse, even with the incredible INFI steel. INFI is GREAT <img src="/ubbthreads/images/graemlins/shocked.gif" alt="" /> but so is SR-77 <img src="/ubbthreads/images/graemlins/shocked.gif" alt="" />.
SR-77 is all that is really needed & SYKC will always be my No. 1 Bussekin choice <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />