I am very disappointed with the print quality of the 3100z where reds are involved. This is a big problem with South West landscape photography.
Has anyone had success with work arounds? or beating on HP for a fix for the 3100z, not shelling out for the 3200z!
For what it's worth, I've been quite satisfied with reds from the plain vanilla Z3100 (no APS), at least on satin/semigloss type papers. HP's professional satin is quite good for reds, and I actually used quite a bit of Epson's premium luster because it was relatively inexpensive, but had a similar color gamut.
HP's newer Baryte satin fine art paper actually produces a really good red/orange gamut on the Z3100, though this paper is just a bit too thin and will cockle/buckle under the inkload if you produce a very dark print with lots of shadow areas. For fall color or red rock images it's very nice.
It's fair to say that red gamut with the Z3100 on matte papers is not that great, comparing unfavorably to my older Epson 7600 in shadow areas at least. HP's version of Hahnemüle smooth fine art using the 'canned' profile produces a red which is...adequate at best. Using the on-board spectro, my profile yielded a visibly inferior red saturation. On the other hand, I get a perfectly acceptable red on Hahnemüle photo rag satin, which is a unique paper that displays a semi-satin sheen in the inked areas after printing.