I stick with the 300 searches plan, and most months I don't hit the limit. That said, part of my strategy is if I'm searching for something that I know will show up readily (say I am trying to find a particular website, I just don't remember if it's .com or .org or whatever), then I use DuckDuckGo instead. Not because it's better, but because it saves one of the 300 searches for something more useful.