[Martin Doppelbauer]

The size of the R-09 can't be beat, but I agree it is subjective and I
think the H-4 sounds better!

The H-4 is definitely much better in terms of sound quality. Both the
internal mics are (much) better and also the mic preamps are better (less
hiss) than those of the Edirol. I own the H-4 and have listened to a couple
of direct comparisons against the R-09.
The Edirol however is smaller than the Zoom and also its built quality is
better. The switches on the Zoom are very small - almost like DIP-Switches.
Overall the H-4 doesn't feel very solid.

No you have to sort out your priorities ;-)
Martin