I was on 1.5 s-on till yesterday.. I went 1.4 s-off because I was getting some reboots and wifi wasn't working on one of the newer custom roms that I like (meanrom 4.0). probably only needed to upgrade the radio to fix it, but since it seems a few of those roms are designed on 1.4 s-off (just my impression, dont know for sure), thought it couldn't hurt to be apples to apples with them. It was kind of fun to do though, took a while, learned a few things going through it.