I did that 3 times and i nearly paid for a pair of beats pro, phew! Close Call! Luckily they were out of black coloured ones cos resulting me to research further and find out the denon d2000s are comparable to the pros in bass quantity (Couldn't hear the rest of the diff becos I didn't want to buy the demo set.) Now, I am thing abt d5k vs d7k vs west.3 vs ie80 vs d600 vs d7100. I am pretty interested in the sig DJ and pro 500 Yamaha but they aren't available. The salesperson told me the m100 is a neutral headphones and the out of the box bass will go away but I would go back for another listen but I don't like its comfort anyway. I dun mind getting the d7k and d7.1k or sig DJ if their sound blow the d5k/d600 out of the water cos the price is kinda high even for a high end phones. Any other Bassy headphones (over or on ear) or iems to recommend. Because the list provided is kinda crap. The Amperior, dt880/990, momentum, TIESTO don't have bass. They don't qualify to be on the list IMO.
I have the D2000, and I have previously auditioned the D5000 and D7000. I feel that all 3 cans are good for delivering detailed bass that has nice sub-bass definition. Nevertheless, they are lacking in mid-bass quantity. On the other hand, the M-100 is far from a neutral can IMO - it is quite v-shaped, with a noticeable mid-bass hump and slightly extended treble. I don't subscribe to the belief that burning in cans will result in a drastic change in sound, and I believe the M-100's bass quantity isn't going to disappear.
You may want to ask the team at Stereo to provide you with an E11 or ZO2.3 when auditioning the M-100. Try to boost the bass and see if you like the sound then. Good luck!