I've used apple's supplied iphone headphones for years, have had some sony ones and some jvc too - but these Skullcandy ones just beat all of them hands down. The sound quality is far superior. I'm still getting used to the earbud vs in-ear phones, but with the two different size buds supplied (and the extra set of the bigger ones) plus a case, all for 10 pounds seems like the bargain of a century to me.
The iphone controls work perfectly - volume up/down, pause/skip track plus the built in mic does everything that I want it to (this was an important buying decision for me).
I cannot comment on the longevity of the product, but first impressions are very good. If these make it a year then I will have got more than my money's worth out of them.
If you're hesitating about purchasing these? Don't - just do it!