I just voted with my wallet for the 3800. It arrived Friday, and I've been making peace with it all weekend. I feel like a beginner again, with a box of Multigrade 8x10 paper and a couple of quarts of chemistry, standing in front of the enlarger trying to figure out how to make prints. It's been fun!
Why I chose the 3800: The physical size of the 3800 fits better into my current situation. I don't need to use roll paper. I rarely shoot extremely wide panos (most of my personal work uses a Holga). I don't expect the smaller ink carts to cost me a huge amount of extra money, given my printing habits. I got a $200 instant rebate, and the $150 Epson rebate.
Oh, and I've made some very nice b+w prints from 6x6 negs scanned on a flatbed. On 17x22 inch enhanced matte paper, they look terrific.