My fault I guess I wasn't specific enough. Lets say, for example, there's a brand new product that is going to be released in the not too distant future that you know is going to be a big seller and you want to get in on it's marketing as early as possible. Now, since it's going to be brand new you're not going to find much if any keyword data for it in any of the tools, but you want to find the keywords as soon as people start using them when searching for the item. What tool would be the best one to use to find those keywords as early as possible?
I know Google's tool wouldn't be that great for that type of situation because they only update their data once a month at the beginning of the month. What keyword tool updates their data the most often?