Sennheiser PX200-II or Marshall Major

I'm looking to buy new on ear headphones because I can't get any in-ears to stay in and the over-ears are too big. I'm looking for headphones that are portable, comfortable and sound good but I'm not an audiophile and I wanna spend around $100. I'll be using them on planes/busses/listening in dorm. I mostly listen to classic rock. I think I've narrowed it down to Sennheiser PX200-II and the Marshall Majors. From what I can gather, both are portable, built well, and sound good but not amazing. I've heard complaints about comfort on each (but more so probably on the Majors) but I'm not sure how valid they are because I don't have a big head. I'm just wondering what you guys think of each of these against each other and if you have any other recommendations.

Thanks.

Thanks, but I was also looking for opinions on the Marshall Major. I'd be interested to hear what that reviewer thought of the Marshalls. That post basically summed up what I'd already heard about the PX200-IIs. I'm really looking for head-to-head how do they compare.