For me the reprap discount lcd is perfect and essential for my printer, I have no need nor the room for the larger lcd, especially sacrificing cpu cycles on the mega to have it. I do not print from the pc. I am still using sneakernet to transfer the files and set the printer to print. I will be working on expanding the capability of the printer to do drag and drop file transfers at some point.
At this point my printer is essencialy wireless besides the wall plug. USB is being fed wirelessly to my main pc where I can control the printer or do firmware updates over the air so to speak, it can copy gcode over wireless however it is painfully slow due to it being transfered at 25000baud ~ 3k/s. Next step is to get reasonable rate transfers to SD card. ~1-2MB/s
At this point my printer is essencialy wireless besides the wall plug. USB is being fed wirelessly to my main pc where I can control the printer or do firmware updates over the air so to speak, it can copy gcode over wireless however it is painfully slow due to it being transfered at 25000baud ~ 3k/s. Next step is to get reasonable rate transfers to SD card. ~1-2MB/s