For similar sound the IM716 resembles the SA6 and is another good value for money phone. And maybe the ER4p, but it has less bass. That's about it.
For comparable quality at its price range the best option would probably be the Livewires. The X10 is compared often to the SA6 too. Yeah they are significantly more expensive than the SA6 which is why the SA6 is a good value IEM.