MOTM

Yellow letters on a black background would be very cool indeed, and the extra cost would definitely be worth the increased understandability of a 2x16 disp. vs. a 4 char led jobbie.  If its really necessary is another ball of wax, depends on how clever and legible you can make a 4 char.LED display and also depends on how much info youre trying to get to us through the display..  I know there are a few future modules with LED displays, so maybe the yellow/black display would differentiate the 650, or maybe people would like more of a matching red LED theme.  I think red LED displays would look great on MOTM panels, but if deciphering what the display is trying to tell me would be made alot easier with the 2x16 yel/blk then go for it.  Function over form for me.  Maybe there is a 2x16 red display? (ala MachineDrum....drool)

my 4 cents on a 1 cent topic...

~Steve