You'll also find a lot of information about each of these tools by visiting their respecting forums here.
But to get any kind of useful answer, you'd need to put a bit more into your question:
- what lead you to prune your selection down to just these two?
- what kind of testing do you want to perform?
- how technical are the folks who'll be using the selected tool?
- what kind of experience do those folks have (testing, automated testing, and tool-specific)
- what kind of budget do you have?
- what kinds of applications will you be testing?
- etc, etc.
Maybe you should be reviewing the tools against your requirements rather than their differences.
Suggest that you -
- Identify the requirements that you have for a tool that does automated testing
- discuss with vendors to determine if their tool will satisfy your requirements (expand your list of vendors as good as the 2 you mention are there may be another that will work better for you)
- do a proof of concept with vendors that includes a demo version that you review against your application
I have not failed. I've just found 10,000 ways that won't work" --Thomas Edison