I'm searching boards with an Atmega2560 and integrated W5100 Ethertnet, which should be compatible to Mega+Ethernet shield. I just would like to get rid of stacking the ethernet shield. So far I only found the Iboard Pro https://www.itead.cc/wiki/IBoard_Pro
but the reviews are not so good at all.
no USB
If you had any hints where to get well working boards, ...