Why did you rule out the M1s?
The BX range is good for the money but they are a bigger speaker so not sure how that will sit with your Mrs? If looking at the BX range then I would also look at the Focal 700 series and depending on budget maybe even the MA RX range or Kef Q series too. As above I would still look to get a BK sub instead of one of the matching ones from any of the manufacturers mentioned.
The best advice would be to now go listen to as many different makes/models as you can in your price range and let your own ears decide.