Best datamining tools?

Answer 1

Any data mining tool that you want to use depends on what you want to do (prediction, classification, etc) and what technique you want to use (neural networks, decision trees, etc).

You can check out this comparison www.datamininglab.com/pubs/kdd98_elder_abbott_nopics_bw.pdf

and there is also WEKA, an opensource java based tool that can be used for a variety of datamining applications.

Check out WEKA at http://www.cs.waikato.ac.nz/ml/weka/