My BM 615 is one of my top three knives. It shares the upper ranks with my 735 Ares and my Spyderco FG CPM D2 Military.
As far as quality goes, it is very high - great fit and finish, great blade shape, axis lock is awesome, great length, good handle.
The clip sucks, but it still gets the job done.
I had problems with the S30V chipping, but I suspect that once it is sharpened fully, that will go away.
Good luck.