Sennheiser Momentum 2.0 for iphones are cheaper than regular ones... But Sennheiser has one big disadvantage - you won't be able to go back to trash headphones...
P.S. Bose, Beats and similar are marketing sets, i.e. those companies spend most money on selling their stuff / buy ads on TV. Good to make impression on young girls and young friends, though. Sound and built quality is usually mediocre.