The place in the states is actually called "Off Road Evolution" or ORE. They make some VERY skookum JK suspension setups - like the EVO-Lever system.
As far as the "replace the crappy factory disconnect thingamajig" plan...yeah. I think that it's probably the way to guy if you're not just going to rip out the stock sway bar to put in an anti-rock or sway-lok. I'd choose that over "conventional" sway bar discos.