Just ordered a pair of these few hours ago.
Got a great deal, I think.
I was divided between the gr07 and the Yamaha´s. These were 40 euros (55 dollars) cheaper with better isolation, from what I heard. Also I get 2 year waranty ´cause I bought them here in Portugal and the gr07 would have needed to come from China.
I have HIGH expectations on these. I´m not hopping that they are the best. Just hope they are fun. I´m much more a music lover other than a audiophile ("gear" lovers IMO).