Well, I used a freinds AR cheat for 999 masterballs, but I don't use 'em much, takes all the sport out of it. If it' s just a normal day in the feild, I'll usually use an ultra ball or timer ball, or sometimess I'll use something to paralyze it, put it to sleep, or freeze it right off the bat and then toss the quick balls. I used that stategy to catch palkia in three turns, it really works! Anyway, I usually use dusk balls at night and in caves, and net balls on the water. Master balls I save for shinies(I have found none, I has no shinies) and legendaries(tho I had already caught most of em wyhen I used the cheat).