At 60GB or over in capacity you might want to make the SSD your OS + apps drive and be done with it. You can put Windows 7 64bit Pro, Office 2007 Enterprise and a few apps comfortably on a 20GB disk. It's only when I added Visual Studio the whole thing went downhill. A minimal config of VS Ultimate nixed about 9 of my remaining gigabytes so now I only have less than 700Mb for files.

Just prioritise your files and then 60GB is quite enough to have your cake and eat it, too.