It's a bit of a mish mash at the moment - I use Tahoma 8pt for the tree and list view (and therfore menus and tabs) which looks great on a large LCD.
Unfortunately the Info Panel uses MS San Serif and many of the dialogues (e.g. List Management) use Verdana??
Find it so distracting that I rarely use the info panel (which is how pathetic I am).
It all looks a bit of a mess when you have the various elements open
Other than that XYplorer is my no.1 essential tool.
Cheers
Phat
XYplorer Beta Club