Has anyone had better luck with one versus the other especially with a fiber based paper? Is the tech support good?
Speaking as a UK owner, tech support for the HPs is excellent, as long as you purchase extended or post-warranty support. No telephone queues, fast on-site technical support, even out here in the wilds of Wales. I'd hate to own one of these machines without it.
As mentioned, the HP heads are cheaply replaceable, and HPs almost never give clogging problems (in my experience), something that can't be said for Epsons. Technically, Epson's inkset has a slightly larger gamut and finer dithering, but in practice, the differences are not readily apparent. Paper feeding is certainly different, however - Epsons have a reputation for easy sheet loading, HPs not so much! Even so, I've never had a problem feeding any kind of paper into the HP of any thickness (not tried card), and the built-in spectro makes profiling new papers a snap. HP's black-and-white output on matte papers is considered the industry standard.