I absolutely love my SE535LTD's, and the Red color is awesome. I am however, on my second pair. First one eventually produced a fault. It had a faulty driver for the right ear which gave a distorted/crackling sound in the mids. It also felt like one of the armatures was loose inside. Not good at all! Being in the UK, Shure could only replace them with the non-LTD edition...
I then ordered a pair through AccessoryJack which have been fine except for the left ear cuts out when walking sometimes, I noticed this must be due to the cable when dangling/swinging around. I'm currently looking to replace the cable now. But other than these few issues, i do Love them.