The default PSOBB font has always seemed a little cheap-looking to me, and not at all cohesive with the futuristic theme of the game. So, I did some brief research on more futuristic fonts. and I found a great one here, TRENCH.
http://www.fontspace.com/nimavisual/trench
It is described as a "techno" font. It looks especially good with the classic PSOPC skin.