Aeroponics puts some special requirements on the nutrients you use.
I didn't really like Technaflora. I've used a bunch of stuff and I've had a lot more success with the Advanced Nutrients line than anything else. Aeroponics can be a beast to keep running, especially if you skimp on your nutrients since you'll end up with a lot of clogs.
So far I haven't had anything from AN clog my sprayers or pumps, so I've stuck with them. In my aeroponics I've got enough to do without worrying about extra clogs from cheap nutrients.