I like Hotmail and Gmail equally, but I also have a Yahoo account. I just like the design of Hotmail and Gmail more, plus they seem to be a little safer.
I used to used Yahoo before they kept messing up with how everything looks and making things more confusing. Now I have switched to Gmail. It's far more simple and intuitive than the email clients I have used before.
I still use yahoo, But I tend to use Google voice to txt my friends. I usually use my phone to text people's e-mail tho, so I don't get on yahoo very much now.