I have Sebenzas in both S30V and BG42. Both are regular working carry knives. I have resharpened both of them plenty of times, and have experimented with steeling, stropping and maintaining them on ceramic rods.
CRK's S30V works just fine. I don't have any scientific evidence (sorry Phil) but I do have plenty of anecdotal evidence.
My impression is that the S30V holds a fine edge a little better than the BG. So if you are trying to maintain a very keen EDC edge throughout the day, or maybe throughout the week, and are stropping it back up in the evening, the S30V might be a little better than the BG. For a utility edge that gets adequately looked after, they are probably about equal. If you tend to let your knife go too long between touch-ups and then end up regrinding it, the S30V would probably be a little better.
My only hesitation with the S30V would be for a hard-use fixed blade that was really going to get beaten on. I'm not saying it wouldn't work well... I just don't have any experience, so don't know. Would lean more toward INFI or a conventional tool steel for that sort of use.
As far as the Sebenza goes, I would say that CRK's S30V is as good as anything else that could be used for that application; certainly as good as BG.
If people are having problems just getting an edge on S30V, I think it's them, not the steel. If they are having problems with retention... I just don't know what to say. The S30V seems to hold an edge better than BG, ATS, INFI... certainly at least as well as D2. Only steel I own that I think holds an edge better is O1, and that's not something you want to put in a standard folder.
I'd say just go for the S30V. I really do not think you're going to be any happier with BG - except maybe from the standpoint of collectibility, but I don't think it's actually going to function any better.