As far as price points go, the UE Metro.Fi 200 (if it still does exist) is the winner hear. In my ears, they share the same sonic quality of its higher-end SF/TF siblings.
As far as quality goes, among the universal fit IEMs the TF10s can't be beat assuming you like the UE house sound. Many head-fi'ers have complained of recessed mids, which push vocals to the background in favor of the low and high frequencies. Then again, such V=shaped music representation gives the TF10s an expansive soundstage (or headstage). Moreover, it has one of the best treble response among the high-end universals out there.
Like what others have been saying, now is the best time to get a pair of TF10s given their price range. I myself was fortunate enough to buy a pair of TF10s a few months ago, a few weeks after the mega-US$99 Amazon sale. If not for such, I would still be languishing with my Shure SCL2s.
Just remember that before buying earphones, do try them out if you have any opportunity.

Good luck!