They don't have to be the best, I'm not using them for gaming, I have my headset for that. Just for things like listen to music in the house or watching YouTube videos or Netflix maybe, simple stuff like that. I'm not really sure of a budget, I never really looked into it yet, just figured I'd ask here first.
The speaker should feel solid and give you back a solid sound.If you're buying speakers online, you can search for reviews or tests of the speakers. Harmon Kardon SoundSticks Wireless This is an option that is may be the best designed on the market today. It is very unique and functional.External speakers can offer you great quality of sound which translates to better performance and better graphics.