Awesome groove!
This is certainly your best song up to date. I would seriously consider doing a lot more stuff like this, you got the talent for it.
My only comment is that there could be a better guitar melody than the one you have now. You know, kind of like the ones you would here at a Mexican restaurant.
In any case, I'm digging this groove. I will help you get into the Top 5 this week. You deserve a spot. :)