I've been looking at buying a headset for my 360. I'm stuck on buying the astro a40's or buying a brand i can get at best buy or future shop. the astros from what i understand are the top gaming set. but where i live it comes with a $138 shipping fee on top of the price of the headset and the mix amp. are these headsets the best? or should i go for the far cheaper ones and risk quality?