I've owned both but still own the III. Not sure if that tells you anything but...
I found the IV to be very versatile and the ability to dial in sounds independently was quite a bit easier than the III which seems to have much more interaction between channel settings.
When I was "playing out" the IV was pretty practical but now that I'm more inclined to be playing at home and don't need instant switching between tones, I prefer the tones of the III. Somewhat less "sterile," others talk about the IV sounding more compressed which I agree with as well.
I don't think I'm saying anything new here but I have owned both and I think you'd like a III.
=CPW=
I found the IV to be very versatile and the ability to dial in sounds independently was quite a bit easier than the III which seems to have much more interaction between channel settings.
When I was "playing out" the IV was pretty practical but now that I'm more inclined to be playing at home and don't need instant switching between tones, I prefer the tones of the III. Somewhat less "sterile," others talk about the IV sounding more compressed which I agree with as well.
I don't think I'm saying anything new here but I have owned both and I think you'd like a III.
=CPW=