At work, we are looking to put approx. 130 portable units in the "field". These will have to be able to survive use in the vehicles, job sites and homes. So far we've tested some Panasonic laptops and Fujitsu laptops and tablets. The indoor/outdoor rated units are not too good in the sunlight. Some not even able to be used on a cloudy day, due to the screen being washed out. Anyone have experience using these in the field?