I'm running a 310 and so far, pretty in love with it compared to my old solvent JV33. Print quality is way better, it's prob not quite as fast when printing high quality stuff, but the quality is a lot better. I did just dumb a profile down to 4 pass for my temporary cheap stuff that doesn't require pristine quality, and it was pretty quick. I do know that the 360 is even faster though according to the tech that installed it.
There are just now aftermarket inks starting to come into play too, and they don't seem to be as temperamental as the solvents were, since they're water based and won't plug up your machine, plus heads on the HP are a maintenance item, so you don't have to worry too much about those being destroyed by inks like you used to on heads that were to never be replaced.