What's up with ACS? First they stoped making sleevs for Westone earphones, as they said there were issues with the sleeves slipping off the Westone's nozzle, now they don't make sleeves for Sennheiser earphones anymore.
I got sleeves for my UM3x a couple of years ago and they've been excellent. I also got sleeves for some IE8s about 18 months ago and they were pretty good (though not as good as the UM3x pair and I wasn't that keen on the actual IE8s themselves so sold them on). I thought that if I moved on to another pair universal IEMs I'd get some ACS sleeves again but they support hardly any manufacturers anymore.