I think my sister has, but she is OBSESSED with the sephora one. It's pricy, but she only used gel until she bought that stuff. This stuff:
The System - Formula X | Sephora
I still use regular polish, with just the top coat from this formula x and it lasts 2 weeks, easy. It'll stay on your toes for life I think. (I legit could jot get it off - after 3 weeks it still looked like I had just gotten them done). And the top coat is sooooooooooo shiny.
Not sure how she felt about the Sally Hansen one. I'll ask her when I talk to her.