It appears that Proficient and Speakercraft were both part of the AVC group as recently as 2012. Judging from web images of the Proficient MaxTV MT2, and having seen the Speakercraft CS3 up close and personal, I'd say they are identical, though different drivers could certainly be used and could have a real effect on the sound. That said, the Proficient MaxTV MT2 is selling for under $250 on amazon right now. Unless there is a big difference in sound quality, if you need this form facter, I call that a steal.