Tested the difference between them several times, but not in fast markets like we had yesterday and today. Using comstock costs me a lot of money these two days, as the quotes can lag up to 5 minutes with Level1 info being completely off from levelII/NYOB and P&L/charts is calculated on Level1. I have used comstock through fast markets before but never had this amount of delay. Funny thing is the delay stays AFTER normal market conditions return and continue delayed 5 minutes for several hours afterwards. Any thoughts/experiences/opinions would be good to hear. Thanks.