Did you check your mail box? Thought it was coming by speedpost by ended up in my mailbox. The package is small enough to fit into HDB letterboxes surprisingly 

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The Momentums do offer a great deal of sound, bass was alright for me (don't judge it just cos it's stylish) but I find it's price a bit too steep.   Maybe if you're looking for something with a flat signature, you could look at the Shure SRH840 headphones. They are rather heavy and...

I've tried both the M50x and Momentums and found the Momentum to be superior in clarity as the bass of the M50x seemed rather muddy to me. IMO if you have the $$ go for Momentum if not the M50x isn't a shabby choice too.