That's VERY highly improbably. You're saying you're about to buy a T1 or T3 connection, which cost upwards of $7,500 per month??
I think you're mistaking the
router for the
internet connection. The router is what you wireless connect to...the thing that plugs into your DSL or Cable Modem. My cable connection right now is about 7150kbps...about 0.87 MB/s, or about 7mbps...my router connection can handle 54mbps. There's 47mbps of nothing...."spare" space. You're thinking that if you go out and buy a fancy new Draft-N router for several hundred dollars, your internet connection will magically speed up. The router can only transmit at the speed of your internet.
go to
www.speakeasy.net/speedtest and tell me the results for your download test.