Keeping a constant input volume is important whether you cut and paste or not. You don't want your tracks, when played in sequence, to have different volumes. For this reason I long ago decided on my input volume, and sellotaped the thumb wheel into a fixed position. Technology rulez
But not sure if you can do that with the Zoom. If you need to adjust this via the menu AND it doesn
t keep the setting, that is rather clumsy, and would stop me buying a H4. I guess that old thumbwheel on my Edirol is not so bad after all...
As for using multiple takes, I have never done that except in one case. I stay within one take, repeat a faulty passage until ok, and cut out the muck afterwards. No problem with volume then, but I have to watch that I do not speed up during this process. I agree, it should not be necessary, and I hope I will eventually not need to do this anymore. or not as often, anyway - it takes a lot of time.