we have the BOB revolution and am interested in buying either the sun shield or weather shield for it. i was originally thinking of buying the weather shield, but then i saw the sun shield and thought that might be better? i'd prefer not to buy BOTH...do any of you have either of these? we like on a lake so its pretty windy when we go on walks. thinking with spring/summer right around the corner the sun shield might be better?? what do you guys think?