I am trying to decide which pair of headphones I want to get. The Klipsch S4 or the Beats Tour. I can get either one for about $80 so retail price doesnt matter. I currently have the Bose In-ear Headphones and just want to try a new pair of headphones... Also, is there any difference in sound between the S4 and the S4i? Because I would hardly ever use the microphone on the S4i and dont find it worth the extra $20. Thanks for any help!