First, apologies if this has been posted before; I'm pretty sure it has, but searching for "3" or "three" is a bitch anywhere.
I just got the most recent one from last month, as well as The End Has Begun, and this band is just fucking ridiculous. Shades of Fair To Midland and a little Coheed and Cambria (similar singing, yet a lot more tonally pleasing) combined with more classic prog elements. The acoustic playing is fantastic, and the electric playing is good too. In particular I really enjoy the tones they go for. A bit less gainy in spots, with a more classic sound.
I highly recommend these guys. It's a shame bands like Coheed (which I still like, btw) and Muse get so much more recognition when 3 absolutely blows them away. IMO.
Joey Eppard is just a fantastic front-man.