Well, the entire Sony XB series lineup is interesting.
It's not everyday that you will here some of the bassiest headphones ever made. Plus, I honestly don't think there is another headphone manufacturer that makes ear pads any squishier than the ones on the XB series. So, with some of the most 'unique' sound you can buy, and the plushest pads you could ever find, it's no wonder these are a very 'interesting' purchase. Oh, and I'll toss in their 'spaghetti cord' as a part of their 'interesting' factor, just for fun.