Wait a week and try the NicheBOT $1 trial.
It is supposed to soon get Adwords, Yahoo, Miva, and Enhance PPC data.
Should be cool for you Arbi guys
The Overture tool isn't quite dead yet-just over used and under served.
Wordtracker has a free tool. I think it was just released. It's nice and fast, but it doesn't have the volume of the Overture tool. Anyway, it's still a good resource especially since it's free.
This is kind of an interesting tool that I came across. No, not as useful as Wordze/Wordtracker etc but it searches the AOL search records that were released a few months back...