I think your best bet is a black-on-green or black-on-white/gray LCD, most of them include a LED backlight for dark conditions and will be very easily visible in daylight. If you can fit all of your data in a 20x4 character configuration, these LCDs are great, very cheap, easy to work with and consume very little power which is always good. They are usually about 3" diagonally. There are 40x4 LCDs, they are bigger and considerably more expensive than the 20x4 ones, but can fit a lot more data. Consider the following: These 20x4 text displays are equivalent to a 128x32 graphic display in resolution (per pixel). A 240x64 graphic display would probably have enough space for everything you'd like to display.