DC5's and EP3's
I had a set of Ohlins 3-way twin-tube, remote res jobbies in the Civic. Toby at Aurok was keen on redesigning the wheel with respect to the whole ARB setup.
Basically we ended up with a third reservoir front and rear with nitrogen between two diaphragms. This was adjustable aswell to allow for tweeking of the amount of allowed roll. The nitrogen took out the harshness of transferring fluid.
They made up some seriously gucci kit for us.
You could also try EXE-TC, they would be known very little outside of the WRC world, but their stuff is incredible. I unfortunately sold my set of EXE-TC's (ride height adj only) a year or so ago. They were made for a race series of DC2's with fixed dampening and rebound. But they were a work of art that retailed at over ÂŁ4k a set.
If all of those are out of the question then i guess you could go to Nitron - they built the chassis setup on our Exige
http://www.nitron.co.uk/