I will tell you all a big secret: There has not been any value in paying for a T1 since DSL became widely deployed. In fact in most major markets T1 circuits are DSL because it allows the carrier to reclaim valuable copper pairs.
i've got comcast with powerboost. plugged into my router, i'm getting 31 megs download speed. wireless drops to 5, though.
This thread is a year old ... what makes people spontaneously start replying to a thread that hasn't been touched in 5 months?
i was searching fios vs t1 on google and i found this. i only left verizon for comcast to begin with because they didn't have fios in my area back then.
Bandwidth is only half the equation. More importantly is latentcy(ping). T1 has a much lower latency than cable/fios. Bandwidth is just how much data can be sent. Latency is the speed of data sent. When you are trading you are sending/receiving small packets of data, so bandwidth is not important. The latency of those packets is crucial.