I've recently purchased 2 different Senheiser phones and ended up returning both. HD280 were a total POS, and the HD555's were better, but still not that great. I thought my old AKG 240's, which I purchased 22 YEARS AGO, and still have the receipt from Illinois Audio (mail order) needed replacing. Neither of the Senheisers could hold a candle, in definition, bass response, high frequency smoothness to my 22 year old AKG's. I would imagine the 271, which replaced the 270's, another great set of cans, will be awesome. I also had a pair of Sony MDVR6's I purchased for my portable CD player about 8 years ago and they only lasted about 2 years. They sounded great, but they fell apart pretty quickly. Go with AKG. Sony's sound good, but from personal experience, the AKG's will last you a LONG TIME.