So what makes a roor so great? Its just sturdier, less apt to break?

I guess, how can a glass tube hit harder than another glass tube??
ninfan77 Reviewed by ninfan77 on . Help pick out my new roor Well im currently trying to decide between two german roor's the choice are first choice Zumo 4.2 orange with 29.2 mm width diffusor $159 euro's second choice Dealers cup 5.0 white with 18.8 mm width diffusor $266 euro's which ever one i decide on will come with an upgraded diffusor, the one with all the small holes in it. Rating: 5