I'm still in the learning phase of PPC. And I've read plenty of reviews on Keywordspy, PPC Bully and Spyfu. I find that most of the reviews are biased. Is there is anybody on BHW who has used all 3 tools in the last 90 days? Can you please give us pros & cons on your experience with these 3 tools. Is there any feature that maybe all 3 tools are missing? How accurate are any of these tools?