[WilliamLeonhart]

Due to the fact that Grados SUCK in a noisy environment, I need a closed-back solutions for commuting and working next to a unfinished building.
 
I'm considering on the M100 and the M50X, both popular on head-fi. Unfortunately I don't like Sennheiser Momentums that much.
 
I have auditioned both the M100 and the M50X (in separate stores), but the short duration and the limited track selection available at the stores makes it hard to come to a decision. My bad sound-memory didn't help, either. 
 
Other recommendations are extremely welcome too.
 
I would use the cans with my iPhone and iPad (no external amp/dac planned yet).
Main types of music include: Indie Pop/Rock (Florence + Machine, Marinna Diamonds, Lana Del Rey), Oldies Pop (Carpenters, ABBA), Post-Rock (God is an Astronaut, Collapse under the Empire), soft Vietnamese/French/Chinese classic pop (in other words, Vocals)... I would sometime load Extreme Metal onto my iPhone too.
 
My sincere thanks.

 

[Chancho2]

Between the two I'd take the M100. What about the NAD HP50? It's not as bass heavy as the M100.

 

[WilliamLeonhart]

Oh I have not heard about NAD. I googled a bit and it seems it's gonna be very hard to find that brand in my country

 

[Chancho2]

Ahh ok. Another option is the Beyerdynamic DT770 80 or 32 ohm.
 
What didn't you like about the momentums?