This is a project I really love doing. There are a couple reasons, first of all, it is not very difficult changing out baseboards, it is a very forgiving project, the walls are rarely straight and the joints never seem to come together in reality like they do on the DIY channels, but if you finish it correctly it is nearly impossible to notice those imperfections. Also, I think nice new base can really change the feel of a room. I am a big fan of the tall baseboard, everything in my house is 6” or higher, I think it can dress up a room quickly to upgrade the baseboards.
Here is how I do baseboard, there are several different methods and ideas on how these should be done, but this has always worked for me.