As much as I like these I wouldn't say they outperform all. I have a pair of entry level customs and another pair of customs (if expectations are right would be higher than entry level) in a month or so assuming my impressions arrive soon that I'll be able to compare to. However my entry level customs and the BA-SS come pretty close to each other so I suspect a higher level will do better.
I also am typically more of a value buyer or at least as much of a value buyer you can be when dealing with these costs and these are not a great value :p Universals also have no place in my collection so I think my wallet is safe. If not then a certain Austrian head-fi member can expect a not so friendly PM by me :)