... regarding the Menu bar at certain screen resolutions. You should post your sys config in your signature, so people can respond to you more accurately.
As an example... I am using an Apple Cinema Display (noted in my config in signature) at 1600x1024. At this resolution my menu bar is only like 2 pixels bigger than in 9.1 and the fonts represent very cleanly.
There is a little freeware program that let you also change the system font.
Look here [url]http://www.bresink.de/osx/ [/url] for download and have a little description of the application.
The application is named TinkerTool.