Need a 2.1 system recommendation for my TV!

Hello Betamaxed.

I recently purchased a Panasonic P50GT50 new for $1099 (tell me how I did) and the sound quality from it is very average at best.

I plan on wall mounting it above my fire place but the shape of the living room is a bit odd so I won't be able to consider a 5.1 system. I was thinking about 2.1 for my setup (or 2.1 with a center speaker?) I just have absolutely no clue what to go with right now.

Would you guys have any recommendations for under $300? I would consider used / refurbished.