Till date i have not heard anythng other thn e7+e9
If u r going for e7 alone....it wud be gud for 262. It is really a nice dac.(cuz of e7 i m planning for x3, yes it is seriously good)
But when paired with e9, and u put 262 in ur ears, thts when fun is. 262 bass gets faster and decay is good...