I don't know if you would be okay with the sound signature of the mx980 coming from the 880. The mx980s are more neutral and wide sounding, what I loved in the mx880 is not present in the 980, they are different. If you want a more fun experience and can wait a little while, I highly suggest the 9wave NW Studio for the same price as the mx880, around $60 US. They are very fun, lively, spacious and much more user friendly than the sennheisers. The down side is that there is no release date for them yet, and only the PRO version is available but thats a whole different set entirely and costs more than $200.
Im waiting on LFF and a few others to post their reviews of the 9wave, but the mx980 is the most versatile set of headphones ive ever used, it scales up nicely and can change with good amping, its easily the best gaming headphones available IMO, excellent sound quality and bass with a huge stage. But ya, unless you are a giant with huge dumbo ears, you will find them uncomfortable as they are HUGE.