How does one get the Ear Guides on the cable? Does it have a slit on the side which enables it to be pressed in? Also did you have to try alot of different eartips or did you get lucky early on? I'm using the Comply foams which finally feel secure, after trying about three types of silicone sleeves from Monster, Sennheiser and Radio Shack. The Sennheiser CX-(?) were the best but still started to come out after awhile.
I'd like silicone over the foam because I think the foam absorbs the highs rather than reflects them back to your ear canal, but maybe it's just my imagination, as I have been using the foams for a couple months now so just remembering how the silicones were like.