whatcha think of this rub?

I am smoking 2 pork butts and decided to try cumin on one but not on the other. here are the recipes I used.

1/3 cup salt
1/6 cup turbinado sugar
1/6 cup brown sugar
1 tablespoon Black Pepper
1 tablespoon Paprika
1 tablespoon Garlic Powder
1 Tablespoon Red pepper
1 Teaspoon onion powder
1 teaspoon chili powder

The second butt got the same stuff but with 2 teaspoons of cumin as well.
There will be pictures when I put the butts on.

thanks for the feedback guys. I seem to do pretty well on these pork butts but thats the only thing I have cooked and had turn out well.