I auditioned the 703's and 704's. I think the M60's and M80's are very similar sounding. Personally, I think my 60's sound better overall than the 704's, at a heck of a lot less money.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85