my concern is creating logo that can be copyrighted by you and used as your business identity, i think using a generic free font from internet with no custom treatment on it can't be claimed as yours, because everyone can use it anytime anywhere. But if you still interested in this kind of logo maybe you can tell me which font that fit your need of "classy", please take a look on this link :
http://www.dafont.com/theme.php?cat=601&text=A&fpp=100