I agree strongly with Keithr. My dedicated theater began with Definitive BP2002TL as mains, CLR2500 center, BP2x sides and 6.5” 2-way in-wall rears. Threw a big soundstage but something was still lacking.
I then converted over to M&K S-150 for mains and center, SS-150 tripole for sides, kept the Definitive in-walls for the rear and use a Boston Acoustics PV1000 sub. This change yielded a dramatic improvement across the audio spectrum. It really is scary how well the M&Ks image and seem to disappear in front of you. They are very accurate and dynamic which I think works very well in HT. Regarding their use for music...they’re OK...a little ‘cool’ for my taste. I chose the PV1000 over the M&K MX200 because I felt it was faster and tighter than the M&K. Overall output was lower with the PV1000, but I wanted something cleaner rather than high output. I figure I can always add another PV1000 if I need it...so far not even a consideration!
I recently considered combining my 2-channel system with my HT system. I moved my Boston Acoustics Lynnfield 500L speakers from my living room to the HT (along with the Aragon 8008ST amp to drive them). Now, mind you, these are $5000 floor-standing speakers v. the $1700 M&K satellites. It was no contest…..the M&Ks just sounded better. They presented a bigger soundstage, were more dynamic and drew you into the action to a greater degree. Another big plus is their small size. Even in my dedicated room, placed next to a 92” diagonal screen, its nice to not see a huge tower right next to the picture.
If HT is the primary consideration, I think its very hard to beat the M&Ks, especially when cost is factored in. If you want to also use them for 2-channel listening, you might want to look at some other brands that straddle the HT/2-channel line a little better. Hope this helps.