"If you have a voice with more lower harmonics you can have problems finding a microphone that accurately reproduces the sound of it. Is it just a feature of the microphone that is creating a recording that seems too thin to you?
It took me a few years to come across a microphone that would work for me and yet was in my price range!"

That might well be true. I'm reasonably happy with the specific recordings I made (well, three out of the four songs). We used a Neumann U87ai in the studio. And I deliberately sang quite close in, to maximise that bass-boost proximity effect you get with cardioid mics.

I have an AKG C414B at home, which seems to suit my voice quite well, but again, I find I really have to get in close-up to approach the sound I think of as "my voice".

Which mic was it, by the way, that ended up being right for you, Caterpillar Wrestler?