It's the rotor head that makes the ride rougher, doesn't matter if it's the c2 or metro's elite (e for economy.) If you are serious about switching to the 145 from a 135 don't let them cheap out and get a elite or any C2, get the latest variant the D3. Just dealing with vartoms issues alone will be enough to make you regret switching after being spoiled on a 135. I wouldn't give up our 135 for a 145 unless it was a d3.