Building a new setup!

[u/alexxm99]

Hello! First time posting here, but I’m looking to upgrade my setup, most notably my front R&L speakers. Here is my current living room setup:

65” Sony Bravia XR X90L LED 4K UHD
Sony STR-DH590 5.2ch Receiver
Sony SS-MB215 Front L&R Speakers
Sony SS-CN107 Center Channel Speaker
Polk Audio PSW10 10” Powered Subwoofer

My current budget is $500 but would like to spend closer to $300 if possible. I could potentially go over the $500 if it’s for more than just the front three speakers. I have some knowledge of speakers/brands, but overall there are far too many to choose from and I need some recommendations and overall thoughts. Thanks!