I open with I have heard neither but I have been doing a bit of research on Klipsch Heritage products over the past few weeks - so bare with my ignorance and possibly perceived stupidity and crazy value judgements. Now I kinda thought (and I beg for forgiveness in advance) that the Mach One was from a bottom end manufacturer that got lucky and made a "a giant slayer" for a very cheap/reasonable price???????? Please don't go "OH NO HE DIDN'T JUST SAY......"

cos I know there are a lot of Realistic lovers. It seems like it is always the STA2000 and Mack One's that get all the love which are the anomalies of the brand in general. The Hersey was a high end speaker and came with a high price tag from a pedigree company (new they retail $5000 here in OZ) and as rare as hens teeth used here
I just want to learn, understand and completely open to having my value judgement's challenged. So when I read the OP's post the first thing that popped into my head was '
what an unfair comparison' and then reading the subsequent posts it was clear I really didn't have a clue about either speaker or their position in history/price/pedigree/etc.
Rob