I actually never upgraded, I had a pair of Grado SR325is borrowed for demo for about a week or so (burned in and everything). I couldnt say the difference was night and day (which is what i had expected), bare in mind i had the SR60i to compare them to. I am not saying there was no difference, in my opinion the difference wasnt huge enough for me to spend the extra R3500 at the time. Fast forward to today, would i buy the SR325is, nope, the SR60i suite me just fine, i wouldnt mind the 80i/125i laying around for a different perspective now and then.