I did listen to and own the Q1 for a couple of weeks.I loved their mid range weight and imeadiacy,and also presence of their performance good bass weight extremly good imaging and soundstaging.But plastic pod on the top started vibrating and that was it for me also the brass sounded a little thin.Besides the plastic pod on top they had a lot going for them nice speaker line.
I own Q3's, Q-Compact's and Q9C, and no vibration problems, I find they are great (as mentionned above, extremly good imaging and soundstaging), especially for the price I paid. I know Q5 are one of their best with just enough bass. I've read that Q7's and up might be too boomy. I would audition them first with what you like to listen to.