In that price range I would go with the Sony PCM-M10 ($200) which has better internal pre amps and battery life than either of those.
The R-09HR has a better "HOLD" function because you can keep it from having the levels adjusted while on "HOLD", which with the M10 you cannot. Otherwise, I prefer the M10.
Zoom machines are, from all I have heard, pieces of garbage and I would avoid the H4N unless you REALLY need the 4-channel functionality.