I am thinking of returning to the relative safety of scalping, and while re-tuning my methods, I *seem* to have noticed that the IB paper trade engine provides hits on orders (long or short) more quickly than the live account. Maybe this is a question for IB staff only, but is there any sort of priority or standing difference between the paper trade account and a live account? Both situations use SMART routing. Same instruments. It could be just different days' volume or increment away from bid/ask... but if there were any (ANY) sort of execution difference -- and I'm speaking of speed of getting into and out of a position as soon as the market APPEARS to be there -- that'd be vital to know before I start moving money around. And "I don't know" is NOT a bad answer. Lots better than a blow-off.