Comply Whoomp! Mixed (2 slim 2 regular) First Impressions:
Tips are squishy memory foam that will quickly gather earwax if you don't clean your ears often.
They fit the iPhone earbuds quite well and therefore do not fall off easily.
Neither pair fit in my ear, but this is not due to the foam tips, but rather due to the thick rubber material used to hold the enhancer to the earbud. Because of this, my ears start to hurt immediately when I insert them. However, this may not be a problem for everyone, as I had a friend of mine try them and he experienced no discomfort.
Sound quality with these is actually quite good, only muffling the sound a tiny bit (something that was fixed by turning on the acoustic or treble booster EQ)
I also purchased the ibuds from hdaccessory.com and I have to say that the ibuds fit perfectly in my ears. However, the sound quality of them is far below the Whoomp enhancers. The ibuds muffle and weaken the sound much more.
So, I basically need a product with the fit of the ibuds and the sound quality of the Whoomp enhancers. I am keeping both as of now to do further testing.