The momentums were closer to supra-aural for me. I know they're basically the same size, but the FSP's extra width helps me squeeze my ears inside. I think if the momentums fit you then the FSP should be the next headphone you get. Focal has given a blessing to those with small ears and a curse to those with bigger ears. Haha.
:D as long as their deep enough, vmoda with stock pads i touch the drivers