@Tallmo The input-data preferences of Si-types are the same as Se-types. They both acquire each piece of information as an entity unto itself in contrast to N-types who tend to look at information relativistically. Simplistically, N-types prefer to gaze at the forest while S-types the trees. Si-types tend to be more engaged and interactive with their environments (so I agree with them being as you say "constantly in tune") while Se-types tend to observe in a sort of detached fashion. Of all the types, SXIs certainly seem to be the most aware of the quantitative details (especially anomalies) of their environments, people in general and their own bodily functions - sometimes to the point of euphoria and other times to the point of paranoia. All Ips seem to be rather sensitive to what goes on around them....
a.k.a. I/O