Dude... Where have I been these past few years? Just got the "legendary" stack yesterday and had a chance to try it out at rehearsal last night. Let me start by saying that I generally run a David Eden WT405 or WT500 through a D215XLT and D215XL or a D810RP. I was a little hesitant with the idea of 2-12"s, thinking that there would be no way it could keep up with my band. Boy was I wrong... way, way wrong. Using my WT405, this little rig CRUSHED. I am so impressed with the amount of sound that these cabs are capable of producing. Absolutely incredible. My band mates couldn't believe that this funny looking little stack behind me was creating all of that bass. Super punchy with amazing low end and crisp, clear highs without any sort of harshness whatsoever. It blows away any sort of combination I've run over the years with my Eden cabs. Color me impressed. So now, I'm seriously considering selling my D215XL, D215XLT, and my WT500 to fund an IP112. And there just so happens to be one in the classifieds right now. My question is, am I going to notice any difference with an IP112 + EX112ER than I would if I were to seek out an IP112ER? Would the non-ER IP112 be able to handle my low-B with an EX112ER underneath? Is the EX112ER even compatible with an IP112, or would I want a non-ER EX112? Or should I just hold out for an IP112ER? Sorry for all of the noobish questions. I'm pretty much a Bergantino noob as I've never had a chance to audition any of Jim's cabs before and I'm just seeking out advice from some more experience Bergantino users. Thanks guys!