Hmm... interesting you say that BiNiaRiS, I have had the opposite experience.
I have swaped a few boards worth of clears with brown springs and they stick more from what I believe to be a more aggressive tactile bump on the rebound. On older clear stems (ones used quite a bit) they stick/hessitate far less or not at all. Sometimes a little bit of lithium grease helped out. After using a clear stem with brown spring for about two years now it has loosened up considerably and hardly sticks on the way up. However, having said all of that, the biggest deciding factor that I have found is the actual way in which you type. As in angle, force, and speed.
As always though, there can be multiple factors/variables at work.
=)