Since there are so many that say the S4i were good and that it produces much better sound across all frequencies, I decided to buy a pair to try out for myself.
As far as bass goes it is no where close to the Tours, push it pass ~70% volume and it breaks/cracks.
I own a pair of x10s, thus, expected the mids and highs to be impressive and much better than the Tours which are basically tuned for more bass. I was shocked that they are no better then the Tours (tried with a few operas, jazz, lounge, lossless rips). Overall, they are definitely better than the stock apples, but no where as mind blowing as I hoped it would be. I know they are considerably cheaper than the Tours/x10 but so many have claimed that they are about as good/better.
For the price, sound quality is acceptable but so are my old $40 sony ex earphones.
Note to those planning to get these:
The quality of the wires are down right sad. They must have decided to go with a cheaper manufacturer (compared to when I bought my x10s) as there are so thin/flimsy and feel as if they would snap if I accidentally pulled at it lightly. The rubber feels extremely cheap and out of the box it already shown signs of its poor quality with various "dents" in them
Few quick snaps showing wire quality and thickness compared to tours