I have test and work all above SEO tools, Seo Elite, SEO Studio, IBP,Web CEO, Market Samurai, Micro Niche Finder. There is something very important for me that not all of the above tools can handle. Is the languages that use the non Roman character set, very important for me and my language, That means that languages such as Greek, Chinese, Japanese, Russian, Hebrew, Thai, Arabic, etc. aren't supported. Only Web CEO and Market Samurai can use and handle keywords and sites with languages that have NON Roman characters set. Both are excellent professional tools, working great for me, they have very good support,upgrades and worth the money. After communication with the IBP and Micro Niche Finder support team, they told me that will improve this in future versions (Micro Niche Finder in v. 5.0