We really like your revision. A few people I've shown at work said they would prefer a sideways Buffalo. They think the current one looks too much like a bull or the the University at Buffalo logo. If possible, can you try a more traditional sideways Buffalo and a Black background option?
#69 - another version of #62. I liked the stance of the buffalo so I have made a change to it which I think makes it look more obviously like a buffalo. I see what you mean about the University of Buffalo logo though, so I will have a look at changing the buffalo more.