As far as I can tell AD700 and CKS70 are totally different sounds. The bass in the AD700 is very recessed in comparison but the soundstage and high notes are much better.
Since I've never tried Monster Turbines I can't tell you if this CKS70 make a better AD700 alternative so, lets wait for DTKZ review.
PS: I dont own an AD700, Ive just tried them a few times. I do own a cheap AD300, the sound quality is not as good (detail, separation, etc. AD700 highs are much better) but the sound style is similar.
Since I've never tried Monster Turbines I can't tell you if this CKS70 make a better AD700 alternative so, lets wait for DTKZ review.
PS: I dont own an AD700, Ive just tried them a few times. I do own a cheap AD300, the sound quality is not as good (detail, separation, etc. AD700 highs are much better) but the sound style is similar.













But I'm afraid I couldn't get them to work 'over the ears' 



However, it still feels a bit odd and isn't the most comfortable due to some pressure on outer ear area. Not sure if this is going to be understandable but here goes, it seems that you have to fit the whole unit into your outer ear area just outside your ear canal, with the little Audio Technica 'button' almost facing into your ear and resting/wedged against the rear part of your outer ear area, hope that's not too confusing 

I'll have a look into those bi-flanges and I think you're quite correct, I got mine from Accessory Jack and I couldn't find them cheaper anywhere else 
