The only displays that seem to work outdoors are LED displays, preferably super-twist, which works in direct sunlight. The display on the S950 really works well outdoors, but I have not tried it in direct sunlight yet - just shade.
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)