Jasper feeds for about 10 minutes, sometimes less. I was a little concerned this wasn't long enough, but last night he was bottle fed expressed milk for the first time and my mum said he drinks the first 40mls in 1 minute flat and then just mucks around with the next 40 mls-which is 80mls and perfect for him at 11 days old.
I think its better to have a baby who feeds quickly, as long as they get enough in... the only thing is, and I'm not sure if its because he drinks so fast, he often gets the hiccups after a feed!