Wow! Thanks everyone for all this feedback.
@Len - I am COMPLETELY open to revisions and whatnot. These songs I've recorded myself in my home studio, so adjustments really aren't all that difficult as far as rerecording. My main concern is that I clearly do not have the production chops that the pros do, and if that's what I'm up against I'm a little intimidated, to be honest. I'm also curious where I can find these videos and "live" shows.
@Mojo - I sincerely thank you for the advice. I agree, I think I was hiding behind the reverb somewhat. My mic is absolute crap, and granted my voice might be decent enough (thanks for the compliments), but I certainly don't think it's radio or studio recording quality. Thanks for the encouragement; as daunting as those numbers sound, it's still a pick me up.

@thesongcabinet - thanks for the advice. Let me ask you: so when submitting, does Taxi provide feedback to the artist if it doesn't get forwarded on? If so, how detailed is this advice? I think that alone could be worth the price
@cardell - Thanks Stuart.

Under which forum category can I post my stuff for listening/critique?
@kitchensinkmusic - Thanks for the advice!!
@ dave - Thanks Dave. Yes, I was assuming that the stuff that gets the most forwards is most likely the stuff that sounds the most polished. I'm thinking I'm going to save a bit and take the dive. I really appreciate the comparison, and YES I TOTALLY can hear the difference. I think my sample was from SampleTank; it gets the point across but that's about it. What do you guys suggest if I were to "upgrade?" Or would I be better in the long run having things produced by a demo house?
In the end...thanks everyone for the feedback. It really means a lot. Can I ask if any of you have had any level of succes through Taxi? What does it pay (I'm sure it varies, but would love to hear success stories), how is the payment/credits divvied up, what would you say is your "success rate" as far as submissions and whatnot? Thanks again.
Best,
josh