I have had zero issues from my Epson GS6000 in a year and a half that I've had it. The Roland I used to use (SP540V) required much more cleaning & maintenance, parts, etc although the Roland was a few years old. The Epson is also twice as fast at printing & the quality is GREAT even at the "lower/faster" quality & 8 colors makes for much more accurate Pantones & color matches.
Whichever printer you buy you are going to need to purchase a decent laminator. The majority of all decals/signs that you will be printing will need to be laminated, so you are going to have to print, remove the material from the printer & laminate it, then insert the material into the plotter. So, having an print/cut machine is unnecessary for 95% of the jobs versus a separate printer & cutter.