I'm discovering some programs are better than others in researching keywords and reviewing rankings.

I've been using Keyword Elite and it's not bad. However, it runs very, very slow and I feel like I need to double check what it produces. However, it has shown some good niche keywords for my www.owneronlybenefits.com website but I've been researching Market Samuri and a couple others recommended on the Warrior Forum. I'll report back once I have a better feel for it. Also, RankTracker...