Complete Spanish Grammar Review

I have spent years at learning Spanish, and was looking for the best and easiest book out there that covered "everything there is to know" about Spanish grammar. I was fed up with hauling around several books at once, and didn't want to battle through long exercises and worthless dialogs. I JUST WANTED TO REVIEW my grammar from time to time. The author is obviously a second language learner because he presents each grammatical feature in a way that makes it clear and simple to understand. Don't waste your time with the others. I probably own them. Trust me -- this book should be a text in Spanish classrooms everywhere!