Not quite as comfortable as the Ortofon's, but more comfortable than the Fitear stock's. I think the major difference is that the silicone is a little softer than the Fitear. If you look at the profile, they are flatter (a more squat shape) from tip to base, like the Fitears. I think the rounder shape of the Ortofon's is what makes them more comfortable, but again, I just don't really get a good seal unless I push them more deeply. If I do that, then the sound changes significantly to me, but if I don't, then I lose some bass impact. Ultimately, all our ear canals are different, and I figured that for $5 for 5 pair, the Sony's might be worth a try for you. And unless my Ortofon's from Musica Acoustics are not authentic, the Ortofon bore size is definately smaller.