Originally Posted by
dkc192
Assuming OP was asking about window alignment, there's quite a difference between 1A and 3A:
https://www.aerolopa.com/ua-embraer-e75-1.
Both are equally meh for me, so I'd pick 1A because I value not having someone recline into me more than I value under-seat storage.
The actual seat-relative window position is indeed different, but I never found it to matter much for my own experience looking out. For my experience, window-viewing is easy enough in either seat.