I know some of you have AVATAR CABS...http://www.avatarspeakers.com/

I'm mulling over getting an AVATAR Traditional G112 Cube and was wondering what some of you might recommend for a Celestion Speaker (that's what they use) for somebody who plays mostly blues slide/lap steel with a touch of SRV/Albert Collins/Allman thrown in??

In the unlikely scenario that I go for a 212 cab, what would you recommend for a second speaker? BTW, how does that whole second speaker thing work anyway? The Cliff Notes version for Dummies will suffice. As in, do you get to pick which speaker gives the main sound depending on what you want to do??

Thanks guys and gals.