I currently run the HD TCs. Keep in mind the only difference between the EZ and HDs is that the HD has an extra leaf.........it's the same price and everything, and if think it's too hard just remove the bottom leaf.
In any case, I previously had Skyjacker softrides and then replaced then with the HD TC's, and I personally would say the TC's ride softer than the Skyjackers did.
If you want to drive it on the street a lot then the swaybar disconnect is the way to go. The disconnect system takes a lot of the harshness away from the system that it normally has with lifted springs and the stock swaybar setup. As far as driving characteristics I like using the example of pulling a trailer with no brakes..........sure, you can get by with it if you can plan ahead and drive accordingly (like apply the brakes a lot sooner when coming up to a light), but what happens if somebody pulls out in front of you?