Hi Bev,
As others have said, but how sensitive is the 3800's auto 'blocked nozzle/cleaning' cycle? Is it an excuse to waste more ink? Does it clean individual nozzles, or all of them? Epson are striving to lock you into their inks and papers. Once they do that, watch the price of their ink.
At the moment, Epson are upgrading the 4800 to 4880, and some good deals on the 4800 are around (at least in uk, so I've been told). The 4800 comes better equipped with decent paper roll feed and cut off cf 3800. The r1800, which I have, has very small nozzles, easily clogged. Not so with the 4800 or 3800. If you want to run Epson inks, then the 3800, if you want choice of inks, then 4800, I guess. The r1800 is fine, if regularly used with pigment inks, less frequent use is possible with dye.
Best wishes
Ray