I'm just beginning to get into quality headphones and have started out with Sennheiser HD598's and am really happy with them and my new Schiit Asgard. I can already feel however a sort of pull to buy another pair. I'd like to know how all of you who have multiple headphones approach this - does one simply climb the ladder, or does it make sense to buy something with a sort of different sound signature entirely for contrast?
I get that a hobby like this is all about chasing ever better sound, but if that was the whole thing each new purchase would be simply replacing the last. So... is there something out there that would make a nice compliment to the HD598, or, should I just get the HD650 and move up the line?