I
thought they were good for music too and I was happy with them for years, until I heard better speakers.

Those speakers all cost more than comparable Monitor series speakers though. Speakers are a very subjective thing, and make the biggest difference in how your system sounds overall. For me personally, I outgrew the Monitor line. I'm not knocking them, because they are great speakers, they just weren't meeting my personal tastes/needs any longer.
I stepped up to the Studios and didn't find what I was looking for either. Then I listened to the Signatures - wow, but price - out of my price range.
If you're happy with Paradigm, stick with them. If you're looking for something different, take some time and listen to some other speakers because there's a lot of good ones out there.