Any feelings on the Onkyo TX SR 304?

It's a good entry level receiver, not much else to say about it, it has limited connections and features compared to more expensive models but to get into HT on an extreme budget it's probably as good as it gets.

If you don't mind going with a refurbished unit check shoponkyo.com. excellent prices and free shipping and right now they are having a presidents day sale on top of that.