They're ( they, the MDR 7506 ) kind of a industry standard in professional editing and mixing settings, not to mention as monitors. They sound pretty good to a lot of people. I 'grew up' on them, perhaps I'm biased. I've got a pair kicking around that are over 20 years old.

Absolutely, get the cans that sound good to you. Get whatever sounds good to you, doesn't matter what they are. But, please, give a listen to as many different cans as you are able to. Speakers and headphones are terribly, terribly subjective.