I now have the H5, I ordered it first thing and I?ve now tested it out the first time. After the H4 using it is a breeze, no real need for manual, it sounds great, BUT I?ve had 1) one serious problem and 2) another annoyance that I didn?t think of until using it in real life.
1) I use the recorder mainly to record my DJ sets, both the record out (of a Pioneer DJM900nexus DJ mixer) and the crowd/ambience, which I did the other night, but the recording is somehow messed-up. My set was a bit over two hours long and while the first hour was fine, starting around the two-hour mark (not exactly, though) there are digital glitches thru out the rest of the recording, making it unusable. I don't know what causes it and I?ll have to go back to the H4 until I figure this out. The SD card is the same 16GB one I've used without any issues with my H4 for several years, so shouldn't be that.
EDIT: I contacted Zoom support and was adviced to get a new (SanDisk) class 10 SDHC, which I did and now the recording is flawless. I don't understand this, as the old H4n was and is working just fine with my old memory card with the same sampling frequency and bit depth (44,1k/24bit), but I guess some specs have changed and the new one needs a newer spec card.
2) The H4 gain settings are done via the +/- buttons on the side vs. the actual gain pots on the H5. Most of the time I record a line level stereo signal out of a DJ mixer and it is REALLY hard to set the levels of both line channels exactly the same by turning the H5 dials/knobs, which affects the integrity of the stereo recording. Also, it was REALLY fiddly to adjust the gains to a level where it wasn?t way too hot or dead quiet, and even though you have the numbers on the dials, setting them up seemingly even yielded to a 1-2dB difference between the channels. It shouldn?t be that hard, I hope I missed something.