When it comes to scratchers for my state, I always look at the top prizes remaining list they post daily on their site before deciding which tickets I'm going to get. If the game is still fairly new (even if a couple jackpots have already been claimed) I will buy 5 - 6 of the tickets depending on how much cash I'm willing to part with. If a game has been sitting for a while (more than 6 months) I am leery of buying a ticket but I will occasionally if I feel a hunch.
I rarely buy entire packs of tickets unless I have the money to do so, such as I did earlier in the month with my tax return. However, as I have won $500 on Pick 3 tickets and $1,000 on a scratch off ticket recently I do plan to go pick up a few packs of the new Million Dollar Series games that's coming out Tuesday. While my ultimate goal is to hopefully get a ticket with a million dollars on it, my actual strategy is simply going in and getting the tickets on the day they come out and hope I hit a few tickets at the $500 and $1000 level since it's easier to score that type of prize when the game is new and hasn't been sitting for a bit.