Thanks for the quick reply.
The 3800 does seem to have a number of compelling features (too bad it doesn't have a roll paper option though), such that I broke down and ordered one (preorder).
How much worth would you give the Colorbyte software that is supposed to come with the professional version?
Note that the pro version comes with ColorBurst RIP, which is not
the same thing as Colorbyte. Colorbyte makes the ImagePrint RIP. Both are RIP software, but quite different.
Also note that the 3800, while it doesn't offer a roll paper option, will allow printing from the standard top feeder up to 37" in length using the Epson driver. Therefore if you have a sheet cutter (as I do) this may be ok. Not as convenient as using rolls, perhaps, but a compromise. I don't know what the maximum printing lengths are for the other inputs.