yea their looks put me way off to be very honest... but for portable use i have the m-100 =] i actually have a large head, so i dont think the fit will be an issue. as for pressure, do you mean clamping pressure? did you try stretching them over a speaker or something? were the pads deep?
I found clamping pressure to be Ok.
No stretching would have fixed the pressure on top... maybe adding more padding or something but I'm not a fan of modifying stuff... LOL ;-)