I'm using comcast cable internet, which I currently upgraded to 8Mbs Down and 2Mbs Up... I've noticed there are may companies that offer up to 15Mbs down. Someone told me that this doesn't matter at all? I'm very confused... what should I be looking for? Latency? I'm really confused about this whole tech aspect, I used to trade a t a shop and just recently started trading from home. T1 is probably out of the question... I'm a very quick scalped who trades the level II on lightspeed, any input would be greatly appreciated!