Thinking of moving to Linux

Well this thought has been around for a very long time now.
I started to learn to work with Linux a long while ago, in my first professional job. Then was also the time I got to know the world of open source software.
I've been following the development in the Linux world, and every now and then downloaded the latest ISO of some distributions for a test drive. In the end I never gave up Windows. I felt that Linux just could not give me all the tools I need for my everyday tasks.

When I started using a Media Center in the living room, I chose XBMC over Ubuntu Linux. It did a pretty good job and was enough for what I needed.

The Ubuntu distribution was a good Linux choice for a long time, but only now, in version 11.04 it feels like there is nothing I want to do with it and can't.

I always prefer open source software over closed source software and commercial software, with the exception of my Home Windows (Vista 64) which I bought with me PC almost 4 years ago, and Office 2007 Home and Student that I bought for my girlfriend while she was a student (in a great student discount).
Every now and then I review all of the installed programs I have and see which have a Linux version of a descent Linux alternative.