As I'm not a daytrader, I have not studied George's day trading software. As a seller of statistical software, I do know that you should always research the software directly from the manufacturer prior to purchasing. I've done this with the software I currently use...Advanced GET and TC2000...sometimes data feeds are not 100% accurate but as an experienced trader, you should know that. TC2000 data is about as clean as I could get on the market today.
Also, just a piece of advice from one who knows the industry...always buy software directly from the manufacturer, if possible, then you don't have to worry about guarantee problems as you've experienced.