I'm thinking of trying out "keyword radar", but it only works with merchants with sub-id's, I'm a direct affiliate with some merchants and don't think it would work. I prefer software with a one time price instead of a monthly subscription. I also understand about creating sub-id's. I just have thousands and thousands of keywords for some campaigns and have to edit the url in every keyword, and can't automate, etc.. etc..
Keyword Radar is just like the others (Keywordxray, xtreme conversions, affiliate radar) but has many more features in my opinion. The affiliate program has to be able to accept a parameter or sub-id that contains the keyword (encrypted or not). If you have access to the merchant's code, you can easily get Keyword Radar to do what you want to do. Hope that help, Frank.