I gotta tell you, i went up to the DTX562 - the high end of the range - because I needed decent hi-hat action. I didn't get it. Mine is the real hi hat stand with the yamaha hi-hat cymbal pad. I too have messed with the clutch setting and everything else i can find to tweak but to no avail. Is it just me (us) or is a responsive hi-hat on an electronic kit an impossibility? any tips would be much appreciated.
The HH65 is more "responsive" than the HH135.
Moving hats on an electric kit are anachronistic just to appease old-school dyed-in-the-wool acoustic drummers. You don't need a moving hat on an ekit.
You could use an HH65 controller and the HH135 pad.
[I've got HH65, HH130 and HH135...]