I have a pair of audio-technica ATH-CM700Ti (ear-buds) and ATH-M50 (studio monitors), and I love them both...the three companies I'd recommend are audio-technica, sennheiser, and shure (for their canalphones)...I had an old pair of Sony clip-on headphones, and never found them comfortable for too long (but these audio-technia's that you linked to might be different)...
I've tried canalphones and I personally don't like them, but I know a lot of people swear by them, so you might want to look at a pair of Shure SE210's in that price range...to sum up, I think audio-technicas are very good, just not sure of that form factor...
and so we're all on the same page...
Headphones: over the ear or on the ear traditional earphones
Headset: over the ear or on the ear traditional earphones with a boom mic
Earbuds: small earphones that fit within the lobe of the ear
Canalphones: even smaller earphones that are pushed into the ear canal (creating sound isolation)