Hello. Why don't you do a search and then try them all? Ultimately, it will come down to what you like. I personally don't get on with nano, pico and joe. I love ViM and Kate. There is no reason for my likes, apart from personal choice.
You question is a bit like walking into a bar and saying that you know that alcohol is served and you want to be told what to drink to either (a) make you merry or (b) stop you getting merry. The choice will come down to you and your metabolism.
Having said that, I FULLY understand why you asked your question. Whatever answer I give will be wrong (and right!)