I've heard from a few people that Decah sucks.
My kit is stable. The only thing that worries me is passengers who can't remember that my doors open up. They usually impale themselves when the door stops and they try to get in, so they tend to learn their lesson
Despite them not always treating my door so well, it still opens smoother than my driver's side does.
Yes, if your car is a daily driver with VDC, you will end up going through some replacement shocks. I have also noticed that the gases inside them don't really like the cold, but I can usually solve that issue by moving the door up and down a few times. I'll be back in FL soon so I'm not worried about that.