I started with piano. Did that for about 10 years. Towards the end I really started getting into it because I started doing contemporary songs. I found that it was a great way to relieve stress. Probably wasn't the best for the piano but it did me the world of good.
Also tried the keyboard for a while. It was the obvious progression for me. Was forced to play the tin whistle in school. Tried the button accordion around the same time but didn't really have the motivation or dedication to keep that one up.
Now I'm taking up guitar. so obviously that is the most played at the moment.
mars