Currently using the BC27 and BC14. Both are as blade/shaft combos (paired with Nasty R shafts). There are certain aspects I like of both curves and that Barkov Pro looks really nice. Certainly add me as a +1 for a blade or two.
I recently ordered some BM19L4's as well and a couple of more shafts (sadly no more Nasty R's, but was told that the regular Nasty shaft is very similar if not identical).
I must say that I am very happy with my Base blades and shafts so far.