I have the Techno Strobe RGB and use them as my wash lighting.
Another DJ in the area bought the Palette so we compared lights. The only differences that we can see is the Palette has one program that will run a square around the light, within the light corner to corner, and Techno Strobe doesn't. The Techno has dip switches; the Palette has buttons. They do basically the same thing. The Techno came out first and the Palette was the up grade. I chose to stick with the Techno light because I already had them and didn't think it was worth the money to up grade. These lights will not chase/run from light to light. I use my Techno with a DMX controller. The Palette seems to be easier to set the colours if you don't know DMX. (Watch above video.)
If you're looking for wash lighting, consider the "Chauvet Colorstrip". They came out after the Techno and Palette. They wash and chase from colorstrip light to colorstrip. I would have bought them.
However, I've just discovered the American DJ Fusion FX Series. (There are 4 of them.) I would have bought them inside of the Techno, Palette or Colorstrip. They all wash and move, but the Fusion FX Series does a little more. Check them out on You Tube to see the difference.