Just one for the moment:
You might not necessarily need the whole package, but you at least want Rank Tracker and SEO Spyglass. For an extra $50 you get all four tools, so to me it makes sense to go the whole package 
Killer Tools
The Author
James Rose
Snowboard. Travel. Win at life.
Between selling things on the internet and full time control systems engineering, there isn't much time left for being awesome. Still, I give it a good shot.
