I have: 13" MBP late 2009 model = very quiet HP dv7t late 2008 model = super loud in comparison with it's fans running ALL the time, very annoying. Also, I am considering a new MacBook Pro and I like quiet computers. So, are the 13" 15" 17" models all pretty quiet? Are there certain models or components to stay away from if I want a quiet notebook? Chime in and give us your experiences with the loudness/quietness of notebooks you own or have used. Thanks!