It's sounding better all the time.
Neil, do you know if APS will correct the problem I see with reds on non-HP matte papers?
Ah there's the catch. I haven't yet profiled stock like HP Smooth FA, witht he latest firmware. Before I preferred the Easy profiles on all matte papers. I don't know why Gretag can't profile mattes, but if the results are the same as before, APS isn't optimal for rag / matte. When I get time I'll give it a go though.
The reds on Smooth are okay, different in any case between both HP Print center (Easy) and APS.
There is only so much a profile can do, as the ink separations are what control the Dmax and Chroma to a large degree.
It's hard to say exactly what APS or how it will respond to other papers. I only have Hahnemuhle PR 308 and a few German matte papers here. I would like to see some Monaco profiles on the same media to see if just that needed extra bit of control will result in more pleasing color.