I think its more important to know whats the intended use of the laptop
and what kind of portability is expected.
Would you rather have something little bulky, but very powerful or
something light, but powerful enough to take care of
email/browsing and similar light weight processes.
if I had to get one for myself, I'd go with a sub 13in MacBook for its
portability and reliability. But your needs would be different from mine.