I like my profile alot, feels more solid than a freewheel. I used to have a ENO non trials freewheel and it was ok, but it liked to skip and it still does now on mates bike.
As for the weight difference, its hardly noticable.
Also, get some cycling clip thing that go round the botton of your trousers. Stops them getting caught in the chain and they do them in black, basic metal colour and illuminous yellow for night rides :-