reliability and acquisition costs mas maganda ang b14
looks and performance, medyo mas lamang ang EG... although there are some people who do JDM setups on their sentras and they look quite good... check out this guy:
FC pareho lang yan. cost of parts pareho rin lang (medyo mahal ang nissan, pero pag honda minamahalan din ng auto supply eh kala ata lahat ng naka honda rich).
if it were me buying, i would go for the b14... DOHC, no paint or rust issues, hindi kalampagin, reasonably soft riding and spacious. just get a unit with good paint in the color you like and then begin your setup from there.
sa EG dami pa ipapa ayos... palatero pa bubong, isipin pa kung euro or jdm, etc etc.