GUI on the 3800 is much nicer.
Ethernet port on the 3800 may not seem like a big deal; it wasn't to me when I bought it.
However, I was reading some posts from owners over at AVS who were making a case for internet radio. So, I decided to try it.
VERY glad I did. I was very pleasantly surprised at how good it is.
I used a Logitech Play Link to connect the 3800 to my wired router. Works like a charm. It's so good, I connected my 2700 (in a second system), also using a Play Link.
So don't count out the ethernet port on the 3800, unless you really don't like internet radio. I really didn't care much about until I tried it.
BTW, the Play Link, unfortunately, is discontinued. I bought one last year to use with a Tosh XA2 player for updating the firmware, but never got around to using it. I had to search and search and search for another one, and finally found one a few weeks ago, NIB on craigslist for $50. The Play Link consists of two wireless "black boxes". One connects to my router, the other to the receiver, and that's it. No configuring to do, and because they were manufactured as matching pairs, they only "talk" to each other, so no security stuff to worry about.