My personal liking is to take the best races of the day over all tracks, this can be difficult at times due to lower price values in each state but the way i look at it, if you have to similar class of race in each state you will still have the best class of runner for that state in that race.

Saturday races i go no lower than Open class and midweek is 70 rated, these are just guidelines i like to work with and it helps to cut down on the number of races you bet in, no more than 6 races a day, to be honest i should have just stuck with race 3 even though it is the same value as the other races i chose it was still the only Open class race on today, apart from 2yo races but i don't bet in those as i like the form to be visible.