I've been using the free edition of the Krypton Toolkit from Component Factory. I spruced up v1.0 of PainlessSVN with it. It's what gave it the Office 2003 look.

I like to support smaller shops over larger ones, and that's why I'm going with them instead of somebody like Infragistics.

Here's the link to the criteria to qualify for a free license:

http://www.componentfactory.com/freecopy.php