Hi Jeff,
I guess nobody's has the familiarity with those three receivers to give you a comprehensive answer, but from my own research those three brands plus Denon and Kenwood should be more or less equivalent in quality and power within a given price range.
The biggest differences will be in feature set, user interface, and aesthetic design - which you'll have to make the call.
BTW, $300 is a good starting price for a nice solid receiver. The only feature I recommend (that most if not all should have) is pre-amp out for at least the two main speakers for later expansion if you want to add an amp.
Happy hunting!