Most of the VPS that I've found are only 12.5 MB/s and with the VPS that I currently have (though I have doubts where it is really 12.5 MB/s) it doesn't seem to be fast enough.

If I can get 12.5 MB/s or higher then I would consider it -- running a gaming server so I need the faster speeds all of the time (hence looking for a dedi) but if I could get a sufficient VPS that would be great.