Gemmtech...
One thing I can note is not to forget where the printer will be going. For most people (notice I said "most" .....not "all"), some sort of stand is required for the 4800 series because of the size and weight. The 3800 (I've not seen the 3880) is really a large desktop printer while the 4800 series is.....well.....bigger and heavier. For most, the 4800 series will require two people to move around, unbox, etc. while the 3800 can be done by a single person.
Albeit, that probably shouldn't be a deciding factor, but some do take that into consideration. For example, when I was contemplating the 3800, it was going to go on my desk. When I purchased the 4880, that would not fit on my desk and found myself purchasing a $500 piece of Ikea furniture to put it on. I'm VERY happy with the 4880 and have no regrets whatsoever, but perhaps that may also be a decision factor for some folks.
Also, don't forget with the 4880 you can use the larger carts which lowers long term ink cost.
Cheers...
Todd in Chicago
QUOTE (Gemmtech @ Oct 20 2009, 09:24 AM)

I had a friend ask me which printer to buy, the Epson 4880 or the 3880? At first I immediately said get the 3880, it's less expensive, will do borderless
sheets and is the latest and greatest, but then I did some more thinking and came to the conclusion that these are basically the same printers from an
ink and quality of print POV, the 3880 does borderless and the black ink swap cost less than the 4880, but then the 4880 has a vacuum hold down, will accept rolls (does borderless on rolls) is substantially faster (according to Epson specifications) and the biggest difference, the 4880 is actually less expensive to buy! Why buy a 3880 if the 4880 cost less? I'm assuming that the 4900 is on the way and that's why the rebate, but I believe there's some overlap and if you were smart enough 1-2 weeks ago the 4880 actually had another 350.00 off meaning that it was a lot less than the 3880. Am I missing something here?