Has anyone tried these

[AndyS]

Has anyone tried keyworddiscovery.com? Is it worth the subscription or are there free versions out there that do the same kind off thing?

[Maj. Stress]

AndyS,
I'm not sure exactly what you are looking for but this is what I use for most of my kw research:
http://www.digitalpoint.com/tools/suggestion/
I also use old server stats. It takes a little bit of time but if you dig deep enough intod digital point you can usually make a good list. It's free :)