Are these really close? I have heard clips of both but you know how that goes, LOL. I think Celestion is the benchmark for a lot of speakers out there....but do they really improve on what is considered already a great speaker? I hear these are quite different. I have been eyeing up a pair of the ET-65s but also some 80s era (I believe they are Rola) Celestion G12-65s. This is for an oversized 212 cab. Anyone? Thanks!