I use Google adwords because it is the best among all of them & provide variety of results. We can analyze the keywords in many types & get the best we want.
Google Adword is the best choice.Am using that from a long time and its good for me.
So go for it.
Google Adword & wordtracker online tool are best. I use all time. Try it
I just think Google Adwords’ keyword tool is the best. Because it is integrated with Google search engine.
Well there are many options.As all suggest Google adword tool,WordTracker,Trellian, Keyword Spy and so on.
Well i am using different tools for different purposes.Like i have used Gostats.com Hit counters on many of my sites and blogs and it offers comprehensive and real time tracking.Link checker for checking links,Google Adword keyword tool for keyword,Rank checker for checking ranks etc.
For doing keyword research,I suggest you to use seo book keyword suggestion tool and seo chat keyword density tool.
Dear I recommend Google adword tool is best than any other keywords tool.
I think marketsamurai.com and Google Adword are the best options.