When we do IT Pro Ranking surveys, we only take responses on each vendor from IT professionals who've evaluated or are currently using that vendor's technology. We ask survey takers to evaluate each vendor on two sets of criteria. The first is standardized, asking about such things as product reliability, performance, acquisition cost, operation cost, compatibility with existing systems, and so on. The second set is highly particular to the subject of the poll. So in this case we asked about screen size, weight, ability to centrally manage, battery life, and even fun factor. Using the process, you can see how IT pros are likely to prefer different vendors, than your average user.