So I came home with my CX300 today.
My earlier phones were the Creative EP-630, and I had expectations that the CX300 would be a bit better. I took them out of the package, from where they came with the Medium sized siliconbuds on, and shove them into my ears. Music on. What the hell? The sound were very muddy and felt distant. Panic.
HOWEVER!
I then remembered "Wait a sec, I used the small sized buds for my EP630". So I did a switch of buds to the smaller ones. Insert bud, music on. Whoa. WHOA! Now this is what I was looking for! Out came beautiful sound.
For anyone unhappy with the sound of their CX300, try switching the buds to a smaller or bigger size. It really DOES change sound quality.
I now use the smaller ones, the problem is they give less isolation but better sound. Anyhow, I'm very happy with these buds. I say they're nicer than the EP630's (Haven't tried the MD33's).
I don't want to take them out of my ears!
And oh, thanks for making this thread and the review, you were the one that made me buy these babies. I'd never heard of them before this thread.