I prefer the tightness of 10's. With four of 'em, you'll still get the low end extension but the sound should be a bit cleaner. I have a 2x10 combo right now that had a 4x10 with it, but I only got the 2x10. I'm thinking of adding a 2x12 later to have the best of both, but for now, the 10's do just fine. ~M~