I use several, Exp pedal of course... and the evolution UC-33 which is very handy for tweaking just about every CC there is, all faders and knobs are editable. [img]images/icons/smile.gif[/img]
I have edited all my instruments in my templates to x-fade using the modwheel which helps alot with the dynamics.
I use a Doepfer Pocket Fader. It has 16 MIDI sliders, and they can be programmed to send any MIDI message, including Note On/Off. 128 presets can be saved into the unit. Each preset is like a set of 16 faders. It\'s very durable, and *almost* fits into your pocket...but not quite. The sliders are smooth. There are other controllers on the market that have LCD displays, so take a look around.