Hi everyone.. i have a couple of question that need to be asked and i hope this is the right place. Today my Audio technica headphone "rosak" and there's nothing that i can do except to buy a new one. Here's the questions~

1)Anyone have used Audio Technica ATH-PRO5V? How is it?
2)How about ATH-PRO5 MS?
3)and also how about Creative Aurvana DJ headphone?
4) how to determine the sound quality of the headphone (frequency response, etc)?

i've tried to google but as you know, there are a lot of rubbish in the internet. I'm seriously in need of monitoring headphone. If you guys have better recommendation, please do let me know. my budget is around £60 or RM370, but i can consider the high price if the sound quality is reasonable. Many Thanks