Its a bit more expensive on amazon, but if that price is good with you then whatever floats your boat!
Straight out of my S:Flo2, they sound quite amazing. There are a few tracks that sound a bit awkward (Goldfrapp - Tip Toe). Any current iPod is very comparable in performance to the S:Flo, but I prefer S:Flo by a tiny margin.
My iBasso D4 Mamba makes it sound even better than the S:Flo, correcting the problems I hear in "Tip Toe". To be fair, it is only a minor improvement, but it is noticeable in certain cases. I'm not sure how it scales with high end amplification though, since I've never tried.
More info on it:
It is in a perfect area for sensitivity/impedance, meaning that even weak devices can power it perfectly fine while it will not have any hiss or channel imbalance even at very low listening volumes.
However, it does have an issue with balance across the spectrum. At very low listening volumes, the bass is underwhelming, but at high volumes, the bass is overarching and overtakes the music.
Hope this helps!