I've always thought my voice was rather odd. I'm not from a particularly well-to-do family, but my mother is, and with my father's accent being quite neutral, I've taken on her Kentish mannerisms. That said, virtually every male role-model I've ever had has been from either Birmingham or Warwick, so when it comes to things like 'bath' and 'grass' and 'class' I speak with the Midlands short 'A' sound. I have it on good authority, though, that I sound horribly posh to most people, especially on the phone.
With regards to tone, I seem to have astonishing range. I'm capable of an awful, squeaky, nasal, mute-trumpet noise which I absolutely loath, but I can also slip into quite booming, resonant tones, which sounds a lot more manly and cool, but does tend to carry, and makes me feel like I'm shouting at people without meaning to.
I spent most of last year teaching a Chinese friend to speak better conversational English, she said I sounded like Prince William, which I suppose was a compliment.