Hey Blue,
I personally use Market Samurai. Its not just a keyword tool. It also can has the following features:
1. Tells you how many sites have "your" keyword in their title
2. If you had an api key from SEO Digger (no longer online) you can still use it to generate the long tailed keywords...but like I said, you have to already have an old account.
3. Gives you the option to view the searches for broad, phrase and exact specifically.
4. Has trends info
5. Uses Microsofts OCI
6. Gives you your adwords competition, CPC, CTR, Adwords Traffic and a few more stats.
7. Has a very intricate keyword filtering system
8. Lets you check your seo competitions details for your keyword
9. Lets you grab and content from a variety of main sources including video based around your keyword and also tells you how many sites have that content online already.
10. Helps you find one way backlinks with page rank
And there are more features coming but not yet available called Publish Content, Monetization and Adwords.
I purchased this a while back for $67 but now its $149. I haven't checked out the MS offered here and not sure if you can still get the updates if you take that route.
The creators update MS frequently and have come a long way since I first got it. I think it will be one of the top keyword tools available if not already.
They have a 40 day free trial...you should check that out.
Code:
http://www.marketsamurai.com
I haven't tried Micro Niche Finder so I can't comment on that.
Hope this helps and good luck.
JJ