I have a jv300 setup with SS21 INKS 8 colors (lm, lc, lk, & orange and we love it. It is the 3rd Mimaki we have owned & so far none of them have ever given us and problems. With that being said, if the Epsons are true solvent & not eco solvent I'd consider an Epson 80600.
I think regardless of which printer you get you'll be happy