@snowfox: I have never heard of that brand, so I can't give any input on that particular product. Do note that headphones are products that are very easy to inflate the prices on and that there are plenty of low cost OEM producers out there. So I wouldn't put that much value on a 70% price reduction on products whose brand\reputations are unknown.

For $50-$100 pair of phones, I'd recommend looking at Grado (SR-60i or SR-80i). It looks sort of retro and it doesn't provide any noise cancellation whatsoever, but I'm willing to bet a pair of Grados that it'll sound better than most other phones in that price range

PS: I've never used a N810 or my N800 to play music from, so I've no idea what's the internal DAC+Amp sounds like.. ossipena has a point. YMMV.