What's the Best Keyword Research / Analytics Tool for Adwords?

What's the best keyword research / analytics tool for Google Adwords? I've heard of Market Samurai and Keyword Rockstar. Does anyone use these or have suggestions for other programs?

Thanks

 

Honestly, I use the Google Keyword Tool for about 90% of my keyword research. It's free, pulls from Google's own data, and is just as comprehensive as a lot of paid tools out there. Here's the link:

https://adwords.google.com/select/KeywordToolExternal

Google's search-based keyword tool is pretty good, too. You have to have a specific website in mind if you want to use it, though.

http://www.google.com/sktool/#

 

Keyword elite and Traffic Travis are also pretty good.

 

Help is one of the most used words in searching.

 

I am also using keyword elite. I feel that, keyword elite is best for me.

 

I like a slightly labour intensive 'manual search' to check my competitions and gleam where I need to focus on

 

I agree that Google Keyword tool is good. Though I hear wordtracker is great as well.. pretty expensive though... It is just overrated?

 

Raven SEO Tools might be good tools for keywords research and analysis.

 

I am also using keyword elite, keyword elite is best for me