Well
I use Stripes with 5050 LED Chipset. And different wavelenghts, it depends on what you want to grow.
They work awesome and we did a group order together with Wistuba, he also changed his lights in the lab to stripes.
Here are some pics from my test setup in the living room
N. pervileii grown under LED
I wrote some time ago about the stripes on my homepage(sorry dont have much time for updates)
Please take a look here
http://jb-botanics.com/led-lights/