I really like these earbuds, big improvement over what came with the iPhone. Those became uncomfortable to wear for more than 15 minutes, whereas I can wear the Klipsch for a long time. Having a bit of trouble with the size of the foam, the large is too large and the medium is too small. I just read on someone's review about Comply TX-100 foam tips, I think I'll buy them. Great sound and comfortable to wear.