"What kind of data do you guys use for backtesting over the period of one year??
Are these huge files with one tick every 10 sec or one tick every 1 hour? ..... "
I use data from http://disktrading.is99.com/disktrading/ and am using 1 month, 1 week, 1 day, 1 hour, 15 min, 5 min, 1 min and...