I really like this with a reefbrite tech strip...looks great by itself too, but perhaps not blue enough for you
if you favor blue, I would +1 this suggestion...but you could also get 3 B+, 1 C+, and 1 P+...then swap the C+ and P+ out to see which you personally prefer with the other 3 B+ bulbs. Just note the P+ doesn't give you as much PAR