So my question is this: for my month long trip to Indonesia in July, in which I plan on diving most of North Sulawasi (including Buyat Bay), will Bunaken just be underwelming? Should I cut my time in NS short and head to Komodo/ Bali instead? Or is it worth checking out since I will be in the area?
I personally think that, if you're in North Sulawesi, there is some excellent diving on Bunaken. The walls along the SW side, where most of the boats congregate, aren't necessarily spectacular, but there are other choices. Timur I & II on the east-facing side have amazing hard corals, and Timur II is one of the very best night dives we've ever done. If you can catch Pangalingan and Sachiko on the north side when the current is running, you have an excellent chance for bigger stuff.
Is it the world's best? Probably not, but still world class. If you're close, it's worth the time.