Well, I'm now getting 300/7 internet on speedtests... Same upload as I had before, but 4x the download... I'd hapily sacrifice half the download to double the upload, but Comcast won't allow that.
[EDIT] Switched out the rental modem for my permanent modem, (had to wait for it to be removed from my parent's old account) and now I'm getting closer to 200/12. To many people that may seem like a downgrade, but it most definitely is not.