gdc
Head Pro
A couple of mates of mine have the clicgear trolleys an they do seem very well made and easy to push. I think the weak link on them is the wheel lock mechanism. However, not actually owning one I cannot fully confirm this. Maybe you need to do a bit of research.
I have the Clicgear 3.0 and would thoroughly recommend it.
As far as the brake mechanism goes I have had no problem with mine but I tend not to use much anyway. I find it easier to point my trolley across the slope rather than put the brake on - just lazy I guess.
It is a BIG trolley (Folds up small though) so you will look a bit soft if you have a little bag.