Best passive speakers for under 500$

[estebanloquera]

Hi! so I got a used NAD amplifier and want to build a surround system. To start i want to buy 2 Speakers for a total of ~400$. What are my best options?
Thank you for your help!!

 

[jsmithepa]

I hear the ELAC are pretty sweet.

 

[estebanloquera]

I read that too but how do they compare with the audioengine hdp6 for example?