So I've had my Peavey rig (mark VI head, 410tx and 118 black widow cabs) for over 16 years. I really like the head but I think my speakers are a bit tired. I already have a 1-15 cab to replace the 1-18, but I want to get a new one to replace the 4-10. Right now I play in a rock cover band (anything from Allman bros. to Tool) and like a clean powerful sound mostly. I also plan on upgrading the head later on down the line to a GK rb700 or similar. So does anyone have any input as to what Brands or type of Cabs (2x10, 2x12, 4x10 ect...) would be good for my situation? The old Peavy head does around 400watts at 4ohms, I think? Oh, and my budget is around $600-$700. Thanks.