At the end of the day, Carli/Thuren mixed kit does work very well. What I was originally missing was the Sway bar. That made a ton of difference. On top of that, I believe i was running on a substantially compromised axle, which I'm sure didn't help. (see my thread over in "General Discussion")
If I had to do it again, and parts availability was not an issue, I would buy all Thuren, because you can select the valving stage you want and ride height you want, rather than Carli's one size fits all approach. I wouldn't tell anyone that using Carli Shocks and Thuren springs/sway bar is a bad idea, however. If you are looking to install a kit quickly, go ahead and do it. I don't think you will regret it. Just don't cheap out - make sure you run an aftermarket swaybar!