They all suffer when used outdoors because they do not utilize supertwist LCD displays, which is used by every marine product that has been produced in the past 20 years. Sure it cost more, but when I addressed this problem to Yamaha their response was "Less than 1/100th of 1-percent of our users play outdoors - we do not feel this is a problem." They're probably right about the numbers and feel the economics don't fit.

Gary cool
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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.)