Same here! I sadly went through the lower rungs on the ladder thanks to those YouTube salesmen and forum dwellers that go around crusading to tell people they're all the same quality. I finally came out of the haze like, WTF am I doing? Let's see, the pro's are using this one? That's got to be the one. It was. I knew it immediately before I even bothered to see what amp I was playing in the first patch I tried. It just had the right stuff, and felt genuine!
It's the first one I could tolerate playing through studio headset / monitors, too. On other monitors that just revealed their flaws to me quickly. I was chasing other solutions and trying to make it work with guitar cabs. The FM3 on the other hand sounds GREAT no matter how I opt to use it--my 4x12, my headset, or my monitors.