Skunk2, Tenzo R spring question?

Has anyone tried them before. I know that people have tried the adjustable sleeve overs but are the springs any good?

If anyone either has them or has at one point tired them, please place your input in here.

Also anyone tried Tenzo R?

Thanks in advance,

-Kevin

I've installed/used H&R, Wheelbrokera has NK1's (I believe), My friend did Bilstein so I know that doesn't directly answer your question but it's a few brands that have been used repeatedly, Skunk2 has a good name and I've seen articles with them used so I'd say it's safe to assume that they are a good product as well but I have no personal experience sorry..