So, I have the Ultimate Ears 700, and I do like them. However, they are frail, and I do not think they'll last much longer, and I'd like something better. Also, while I like UE 700's sound, they're a little lacking in bass. So I heard about the MDR-7550/MDR-EX800ST, and they seem good. Anyone have any experience with them, especially in comparison to the UE 700? Thanks for any input. Also, do they leak a lot of sound? My UE 700's keeps it from leaking, which is important when I'm in study hall at my Uni.