Was a bit pricey(SGD 118). But if you need a good headset, then this is recommended.
Also any Iphone compatible headset can be used, with Fiio LU1/LU2 adapters, to work like a single button headset.
Already suggested earlier. I just got this one too and can confirm it works well;
The Fiio LU1 might be better option than to get a full headset that only works on the old nokia smarties.