Went to Ocean Star this morning, NBC last week. Coke v Pepsi, or something like that.
Ocean Star has its perks: it's cleaner, nicer, a bit more variety, and a more helpful and attentive staff. However, NBC has better tasting food. The shanghai dumplings at OS were bigger, but had less broth and were lukewarm. The same at NBC were tight, plump, and bursting with piping hot broth. Didn't see any char sui buns at OS, but the grilled chicken buns were good. NBC had better ones, and pretty good egg custard buns as well. Everything else was just a tad better and NBC. Sticky rice, taro, dumplings, rice noodles, etc.
Last but not least, I ate more and paid less at NBC. 4 of us ate a feast and paid $10 each. We ate much less at OS and paid about $15 per. I have yet to try Mission 261, 888, Elite, or Sea Harbour, so those are still to come.