Tomli123I own the 598 and akg 550s which are similar to the 553s. now these are technically incomparable due to the fact that 598s are open back and 550s are closed. BUT in terms of sound quality, both are great, if you are looking for more clarity/instrumental/classical = 598s, if you are looking for more bass while sacrificing a little bit of the rest = 550s. Disclaimer: This is coming from my personal experience, I am no means a professional in determining these stuff