I'm considering a replacement GPS for my 650. Can someone tell me if the Zumo models are easier to see in bright daylight. If I wear a bright yellow tee shirt (summertime wear) it reflects back to my GPS and the screen goes blank. I have a flexible sun shield but at times you still can't read the screen regardless what I'm wearing.What in your opinion is the best choice for a cheap (in case it's stolen or drowns in a rain storm) Garmin GPS. I understand the older models had a brighter screen then they do now.