Run and get them! Er, mouse over to the Amazon link and order them! I just got mine today and at about $50 they are maybe, just maybe, as good as the $200 plus Etymotic ER-4's! (I say maybe because I gave the Etymotics to my daughter and cannot compare them directly because she lives across the country. Just memory which, alas, is fallible... )
I am currently enjoying listening to music (Apple Lossless) on my iPhone. Have not made a call using the mic, a tiny thing on the chord...
These are first impressions, after only one song! Of course, proper fit is imperative for proper fidelity (specially bass notes), and Nuforce provides 3 or 4 different sizes of ear tips. The bass is amazing, but so is the sweet midrange and the very extended and detailed highs (yet not strident).
You might even be able to get them for less than $50! (I did.)