Get new headphones or exchange them?

Ok. I have had these headphones for a couple of weeks; so I should be able to get my money back. My headphones started acting weird the day I got them. They sometimes get a staticy noise, If I move to a certain position they have only one part of the headphones admit sound, and if I'm watching a video it sounds like the sound is lagging and starts getting really staticy. But, if I unplug it the sounds perfectly fine.
So should I get some new headphones? And if so,then which one should i get? Or just exchange them for a new pair? I got a 2 year warranty on them when I bought them. So I can spend about 43-47 bucks.
Here is the headphones I bought.
http://www.target.com/Sony-Noise-Canceling-Headphones-MDRNC7BLK/dp/B001EYU3L2/ref=sc_qi_detaillink

Thanks in advance

Not into the dj style head phones but these babies are cheap and freak great.. go great they got jacked from my bike twice 9.99 i get no noises outside(unless a train is next to me, and it works great on the crapple ipiss(ipod) but great on my chocolate touch(32gb sdhc card plus hack 4 gb drive in it).

It's a common problem found in audio gear. It just means a wire in the cord is broke or is not connecting properly.

Just get some new headphones, those sony ones are pretty bad anyways. Wouldn't put it past $40 Sony's that are supposedly noise cancelling. If you're cheapo, best headpones out there for that price would be some Koss branded ones.

Thanks but I want some headphones. Tired of earbuds lol

Also I'm looking at these koss headphones GameON suggested. I'm mostly looking at the headphones with a mic. I'm looking at those because my mic on my laptop is on the top of it. Idk why its not on the bottom. And I play WoW and I use ventrillo so yea.

Here they are