Good open back headphones for studio use?

Hi guys! 
 

I wonder what open back studio headphones you are using and can recommend? 

Im using good closed ones at the moment but want more air when I finishing the mix. 

Peace 

I have and love the cheapest Audeze model, LCD-2. not cheap though. £600. They have made all other sub £250 headphones ive ever owned sound like trash in comparison though.

I use a pair of Sennheiser HD650s. They're great but not completely neutral, there's cheaper versions of it now, IIRC they did one with Massdrop (now called Drop) where you get the same hardware for about 250$ instead of 400$~

Thanks guys! I bought the AKG k701 before and they sounded so neutral and open but they broke just after some cuple of weeks and they were not comfortable at all.. 

I appreciate your recommendations