By all accounts, each higher level of Esoteric player is better than the last, so logically the 05 will be better than the 07. Haven't heard them against each other, but this is what I gathered in my lengthy online research prior to buying a K-03 (instead of a K-05, lol). Plenty of dynamics and detail. Check! Absolutely. Incredible detail. Lush sound? I love the sound of my K-03, and it has a very full and beautiful sound, but I equate lush to a more tubey sound, like you might expect from a Cary, or CJ, etc.
BTW, I did buy mine without hearing it. And I love it.
BTW, I did buy mine without hearing it. And I love it.