Newbie Shield:
Hi Jadimon,
As you know, it all depends upon demand and relevancy.
If you've maxed them out, then consider using Yahoo and/or Microsoft for the same ad groups.
As an aside, you probably won't get as many clicks each day from Yahoo, but it's been my experience that Yahoo visitors convert a bit better. It also tends to be a bit less expensive.
Microsoft is also good, but not as good as Yahoo and no where near as good as Google.
200 clicks a day per each campaign is good in that your PPC copy is doing it's job. That means that you write good PPC copy, so congrats
~Newbie Shield~