Ha Ha see I told you there are so many versions. You are thinking ahead and rightfully so. Being now you are committed to the 215, in truth I really would love to hear it as I really think you have done an excellent job with the TC15 (Have not as of yet heard the Hathor). Not that the 12 version is anything short of amazing. But I never thought I would play 15"s again till I now have the TC version. But a 2 15 has really gotten me even more interested. Please keep us posted regularly, well at your convenience ( hope it 's often) about its developments. tell you the truth a 215 TC might be a nice idea. I love the horn. Best in a cabinet I ever heard.