I used FM3 for few months and decided to get FX3. WOW!!! This thing is insane. I am going to record a new album on it. The big difference makes Full Irs with blending York audio cabs and endless routing possibilities. It sounds phenomenal.I compared it to previous album guitar sound recorded in traditional way and guitars sound same direct as mic and cab. Full of dynamics etc. I am super happy with Axe FX3. I wonder what they could make better in Axe fx 4 in the future. I have no idea what they could improve in sound quality. Well, Cliff knows it....

