For a while I was considering sway bar disconnects as a way to get better articulation for the TJ, but after a day of mudding I thought "There's no way I want to get under the Jeep to reconnect the sway bar". After some research I found the Currie Anti-Rock Sway bar and found it is the perfect solution for a lazy guy like myself. The installation was very straight forward with decent directions from Currie and some reading on Stu's website, but the instructions lack photos (as a graduate assignment I took Currie's instructions and added photos of my install to make it easier for anyone else. If anyone wants a copy let me know). The only tough part of the install is trying to get the white donuts into the frame with out bashing your hand. A good solid mallet will make things much easier. Here's a link with more photos:
Off-road the Currie Anti-Rock is great, with the added flex. You can get more articulation with disconnects but I don't know how much more. Also I like how you can adjust the amount of flex by moving the linkage forward for a more stock ride or all the way towards the back for maximum flex.
On the highway, I didn't really feel that much change in the body roll of the TJ. It may freak some people out but it's not that bad and you get used to it.
Overall, I'd recommend the Currie Anti-Rock sway bar to anyone. Are they better than disconnects? I don't know, but like I said I'm lazy and usually after some wheelin' the last thing I want to do is mess around with some linkage.