Currently i'm playing through a 1x15 SWR Workingman combo, which has a setup for an extension speaker. The only requirement is that the speaker has to be 8 ohms. As far as Ive seen, the SWR 4x10's are all 8 ohms. I've got a few questions though. Is a 4x10 the best way to go? I love the low end on my 1x15, but the high end is a little weak and doesnt cut through. Could I use a different company? I was thinking about a mesaboogie 4X10 because i really like the way those sound up top. Is it worth saving up a little extra to get the SWR BigBertha 4x10 versus the regular Workingman ext. cab? Eventually, when I have more money to really get into it, I want to use this 4X10 with a regular cab 1X15 and a nice preamp/head. So I'm trying to factor that in when considering what to buy here. Any and all advice/answers/ideas much appreaciated!