I have the Rumble 500 combo and I am very happy with it. Very nice sound, lightweight. I only play small gigs so it is more than enough but I also play in a stoner rock project with a guitarist with face-melting fuzz. So I want a cab to pair it with. When I play my usual gig or practice I will only carry my 16kg combo and for the heavy stuff I'll just have the extra cab waiting in our rehearsal place. There are 4 Rumble Cab choices (my combo already has 2x10 in it): 1x15 > 2x10 + 1x15 very interesting sound..... 1x12 2x10 > sums to 4x10 4x10 > sums to 6x10 Thoughts please. If you already have a combination please explain.