I'm smelly. And greasy. I admit it. And I often find my deodorant to be, well, lacking. I got this great trial pack from klout.com to see if Secret's Clinical deodorant worked any better than the other brands.
Let me tell you: it did. And now I know why. They added more of the main ingredient that most deodorants have, so it works better. They call it "clinical" because you used to not be able to get this strong of deodorant without seeing a doctor. But they changed that, and now you can buy it over the counter.
Secret clinical costs more but it is SO worth the expense. I can even feel the deodorant still working when I'm in the shower, 1 or 2 days after I put it on. It's really incredible.
If you are super sweaty like I am, you should give it a try.