What is the best keyword suggestion tool?

Ok, this question is repeated again and again but I need to know what is the best keyword suggestion tool? First, I ever checked my keyword with SEObook but their keyword suggestion is not accurate. (I know because I ever ranked 2 in one of my targeted keywords in google but the result is very2 different, even I don't get 10% from the traffic amount).

Then I used https://adwords.google.com/select/TrafficEstimatorSandbox and I chose keyword which the green bar is filled 40% in that traffic estimator sandbox. But guess what? I only got around 40-50 visitor per day from SEs(when I ranked in the 2nd position), wow I thought I could get hundreds visitors per day but it seems this tool is not accurate as well. I also used google.com/trends but the fact is not like I expected.

So what is the best keyword tool? I used DP tool, iwebtool, and many others but they are so different each other. How could I find my niche if I don't know what is my keyword?

 

Of course, the Digitalpoint tools found here in this forum is the best.

Look on the tools menu .

 

I would say overture was the most accurate, but that seems to not be working now.

 

Have you used WordTracker? Its paid version is very good. You might also want to try KeyCompete. Link is in my sig if you want to use it.

 

I always use www.goodkeywords.com and https://adwords.google.com/select/KeywordToolExternal. By these, I make some sales on the internet.

 

wokaka have a look at this list of Seo High Pr Tools

 

Overture. But sometimes it's not working, I wonder why?

 

Works fine for me, and yes I think overture is the best free keyword suggestion tool nowadays

 

The Digitalpoint tools are the best?

 

I would go for Keyword Enchanter's free keyword research tool. I don't mean to offend you but I hope you realize that there is more to getting many click throughs than ranking very high in a search engine. You have to rank highly but your words should also demand attention. A bit of copywritting will help.