I can't tell you more about the new speaker yet, ...
Not even if we know the secret handshake?
Amel. We can do a lot to tell you the differences between different speakers, but its hard for us to decide what is best for your situation. Only you know the trade-off you are willing to make to fit a budget.
On an HT setup without a sub: I think that you would be missing out on much that a good HT has to offer if you don't get a sub. Such a setup would be a big step up from using the speakers in your TV, but far short of a system with a good sub.
As background, when I bought my system, it was for music and having good sound for movies was just an added bonus. Movies were not really a priority. I would never go back to watching movies without a sub now. If I were to have a movie only setup, I would give up my M80s before giving up the sub.
I would suggest you post in the hearing things forum to see if you can audition any systems locally. See if you can find an HT setup with M2/3/22s and a sub and see how they sound to you.
Good luck with the search and let us know how things progress.
