I set them up as large now and they sound much better. Think I'll play around with the settings a bit longer. Maybe I made remarked to soon and could possibly have tried comparing them to my B&W floorstanders.
It was a while since I sold my B&W's now.
Now that I've played around with my amp settings, I'm far happier with the speakers!!
Thanks for all the help!
Glad to hear it was just a setup problem. It is a very common issue. I would leave the M3's set to large since you are not using a subwoofer at this moment.
Enjoy!