Been using this MFC-L2710DW now for about a week. I haven't printed much... probably 10 sheets or so, but so far it's quick and reasonably good quality.
I also am in the midst of doing my taxes, so I used the ADF scanner and flatbed scanner quite a bit this weekend. I cannot seem to figure out how to do 2-sided scanning with the ADF though. The online user manual says to go into the advanced scan settings in Control Center 4 and check the '2-sided scanning' box, but that checkbox doesn't exist in the settings. I've looked everywhere in the bundle of software that came with the scanner, and I see no mention of 2-sides scanning. Is it possible this feature was disabled in a firmware update? That would seem really odd if so.
If I don't have 2-sided scanning, I'm probably going to either return this for a different machine that offers that feature or just buy a dedicated scanner. I'm not sure which would be the better option, but this printer was only a mere $200. So it could just serve as the workhorse printer while a dedicated scanner could handle the big scan jobs.
Yep, per the specs, it does not do duplex copy. That is one feature my HP has that really is nice. It scans both sides of the page at the same time.