I really can't comment on any of the gear that you auditioned. I can comment on Mirage, though. I have had a pair of Mirage M-290's since the mid 90's. They are a fine speaker. I'm not so sure that I would put Bose and Mirage in the same category. In my opinion, Mirage is a definite step up from Bose. As for not noticing an improvement in dynamics between the two speakers, well, this is clearly a personal preference. If you are happy with your Mirage speakers and don't think that the extra money spent is worth it, then stick with what you like. Are you able to audition your Mirage speakers with the gear that you are interested in? A side by side audition between the two speakers would give you a better idea of the differences between the speakers. Good luck.