In that case Elvis, the MK M Series package would fit the bill perfectly - very little can touch the MK's when it comes to reproducing movie soundtracks - it's what they're designed to do. You'll hear rumours that MK are "awful" for music. This is usually regurgitated by those who have never heard an MK system in their life, or if they have, it's been a badly matched one. We've sold countless M Series and 750 series systems to people wanting the best they can get from their movies, many under the same misguided impression of below par music. Nobody has brought their speakers back after their run in period asking for a refund/exchange due to poor music. In fact, many people are quite surprised at how good they do sound, giving music the same strengths it gives to movie soundtracks. Granted, there is some differences compared to hi-fi speakers, but that's to be expected as MK systems are based on the sub/sat design. I currently use my150's for music (no room for my hi-fi at the moment), and there's nothing wrong with them at all!
If you wanted to compare them to some hi-fi speaker packages, you could do far worse than try systems from ProAc, ATC, and KEF. Be sure to audition as many as you can.