Okay so I have about $300 to spend for sound after splurging on a huge TV. I want it to last a bit before I spend more on sound but this is all I have at the moment.

I'm looking at a refurb Onkyo TX-SR304 for about $120 and leaving me with $180 for 5.1 speakers.
Or I could get a TX-SR505 for $160 leaving me with $140 for speakers.

OR should I scrap all that and just pick up a HTiB such as the Logitech Z-5500 or Onkyo HT-S4100?

Thanks for the help and I'm not looking for anything future-proof.