So I checked out your song "DayDay" I think the voice has potential, like a good hip-hop tone! The beat was kinda interesting, definitely had an indie vibe...
I think the mic is a little lacking in weight, now I see that Zombie Morg said to "get a new mic", now while you can do that I'd send what you already have to this guy
John Bonnell Mic Mods - Studio Microphone Modification and Upgrading
I actually upgraded the same NT1A and it really made a big difference in sound, like it's not the best looking mic I have but it sounds freakin awesome! Mine was like $80 shipping and everything....
Now for the other $920...
I owned an MBox 2 and a Presonus Firepod back in 2007, and crap that Mbox sounded terrible in comparison. Think about upgrading that...Maybe something from Presonus. Then again the ISA D-I/O upgrade would totally take care of that....Still, it's the D/A that was the problem with the Mbox, it just sounded bad, I'd use the exact same session and switch between my Mbox and FP and that Mbox didn't have nearly the stereo image or definition.
How about a firestudio project...It definitely will give some decent metering and will give you a better sound D/A. You could definitely pick up a used one cheap!
Other than that keep doing what you're doing!