My CRKs have all been unbelievably sharp outta the box. I mainly use a Sharpmaker and I've never had a problem touching up & eventually rebeveling any CRK edge on it. I try to do as much as possible on the 30deg side (back bevel) & hit the last bit at 40deg to micro bevel. Depending on how long i wanna take sharpening i usually remove the burr by holding the edge at a slightly more obtuse angle and do 5 light strokes on each side. With the slight variances of the human hand I usually end up with somewhat of a convex edge at the end.
Honestly, with proper sharpening, my Sebs edges last equally as long as other knives with the same steel but higher heat treat. I'm 100% convinced that anyone who has a problem with CRKs heat treat simply has not removed the burr. There are plenty of folks around who don't pay enough attention to be making informed comments. They have an experience (real or perceived) without realizing that every step involved makes a difference. The most simple method I've found is to sharpen the best edge you can then smack the edge pretty hard a few times on a piece of hardwood. If, then, you can "see" the edge (I mean the edge not the bevel) or get a reflection off of it you did not remove the burr and the edge holding will seem poor. But it is actually user error.
As far as the steel itself... There are plenty of charts and graphs & folks who I lovingly call "cardboard cutters." There is a lot of data. In my use, I personally find that S30V/S35VN is fantastic. I have 154CM, Elmax, S90V, SR101, 01, 1095 & D2 at the moment. All things considered, S30V/S35VN (CRK, Strider, Shirogorov, Spyderco, Benchmade) has been my fav. It is a Jack of all trades, master of none steel but its edge holding is as good if not better than most, its not too difficult to sharpen, it's as or more stainless than most. It is not the most durable steel out there but is more than tough enough for an EDC folder. CRKs one point lower on the RC hardness scale makes him one of the only makers that I know of who addresses what I see as this steels only shortcoming.