I cannot comment too much on looks given how subjective that is (some people like utterly clean and spartan, others a bit more trussing up, etc.) however in terms of reliability I can talk to both personal experience and bit of the results I've seen from personally digging around
First off in terms of personal experience:
I would avoid HP from a reliability standpoint. Personally I had an extremely poor experience. I purchased one for a black friday deal because it had the best bang for the buck, and in roughly a week I had to exchange it. Just shy of the one month mark from the original purchase the exchanged model also started severely acting up. At that point I said forget it and exchanged it for a Toshiba with comparable hardware, paying the difference. This leads into my second notion....
Toshiba-- I cannot help but give Toshiba a ringing endorsement. In terms of price vs. reliability I have been extremely happy with them. My first laptop was a Toshiba and ran strong for about two years before I started looking for a new one merely because it was feeling a bit dated, that's when I went through the aforementioned HP fiasco. I am right now typing on the Toshiba I exchanged with the HP about three years (possibly more, hard to remember) after buying it, with no issues at all. I can also vouch that my experiences lead to my Sister and Father both purchasing Toshiba laptops, both of whom are extremely happy 3-4 years into having them.
As far as what I've found in terms of research (i.e. secondhand knowledge):
Good bets: Asus, Acer, Toshiba
Have heard some good and some bad: Sony, Lenovo, Samsung
Have heard a lot of bad, very little good: HP, Compaq, Gateway
Out of all of those I'd still edge Toshiba as my vote for a student-specific laptop in terms of the very solid reliable variations they have all in the low to lower-mid price ranges (say 300-600)