I haven't seen these consumer reviews praising the S4, but what I really like about my S5i is that it was cheap when on sale, has a small inoffensive nozzle and soft tips, has large bass, and has a 3-button mic. When I listen critically I tend to dislike the bass quality. It's not too much bass compared to a good basshead earphone, but it is too bloated and muddy.
The Image S series IEMs seem to go on sale very frequently. At $50-$70, it's a lot of IEM, especially with the remote.
By contrast, the TF10 does everything better sonically (even mids IMO FWIW), but doesn't fit everyone well, caused me comfort issues, and inspires very many redundant threads on Head Fi about where or how to get an inline remote for it. With a high MSRP, a decent but still rather high street price, and a hidden cost of ownership (horrible cable, inadequate tips, ear rape), that's a bad consumer review in the making.
Audiophiles put up with it because the TF10 is the 5" stilletto FM pump of audio. And because we would actually consider spending another $150 to be able to use a $150 (street price) earphone.
Haven't heard the other earphones in this thread. Just addressing the reviews of the Klipsch and its comparison in this thread to the TF10.