i have the K272HD and i must say that they are pretty awesome.
But you have to know that producing with headphones is nearly impossible.
Don't think there is any headphone set with realistic bass/sub response.
At least not the AKG. You have good basses but poor under maybe 70hz.
Dont know the other one you are talking about. Never heard about too.
Akg is a trusted brand you can go for those but don't expect to produce a track from bottom to top with only headphones.
Have to say: when i say poor response, it's a volume matter. Basses/sub are never distorted or whatever. Just attenuated.