I'm sort of rediscovering my IE8's yet again. I decided to break out the big bag o' tips, and sit down to critically compare. I'd been using the UE single flange silicone tips for a long time, thinking I'd heard them as the best in terms of SQ... but in going through Senn's included ones, I got out the double flanges. I remembered they were pretty good and a viable option if the UE tips had ever been lost. Well in swapping back and forth between these tips, I was finding I like the double flanges better (med). I was hearing a little brightening of the treble, which is needed. This slight increase in the high end, along with the purchase of the ALO Rx and Lil' Knight mini to mini cable, is really helping overall with what I have considered their weaknesses- namely that darkness on the top end.