Exact Match/Broad Match Search Results & CPC - Best Tool?

[LarryWentz]

So I admit I use Estibot to look at exact & broad match tool results... but is it accurate? Where do they get their results? Do they combine Google, Bing & Yahoo results somehow? I note one domain broker lists exact match/cpc results in their newsletter but their results are higher than Estibot results (based on just a couple names I looked at).

So which tool provides the best results for looking at broad/exact match search numbers from all search engines (or major 3) as well as CPC?