Thanks CXFlyerBoy and Bttc - Yea when I first was looking at the flight on the cathay site I thought it was an error that some of them showed as 7 hours instead of 4. Then after looking closer I realized that they had connections. They don't make that real clear in the beginning. There were several if I recall. I didn't mean to list those sorry.

So I think at this point I should keep the 11:30. I'd hate to spend another 4 hours in HKG get into our hotel in singapore that much later and still have the chance of a last min. change. Also, maybe I'll get lucky and they'll change my flight. At least it's not an overnight flight!!