I myself was excited to try Luster which I got at Walgreen's when I had a coupon. This is a bit of a process to use, but it does get you results within 1 hour. You will have to process through the process a few times with using the light, but I manage to do other things while waiting for the light to go off. Luster also comes with a little tooth color chart so you can see the changes in your tooth color.
I also like the Smile pen I got at Kmart. It's an "As Seen On TV" product
This is SUPER easy because you can just apply it at bed time. These are also nice if you are traveling and say your drinking down the red wine- you may want to whiten things up on the go and these pens are great for that. The one thing I think that makes a different when applying a whitener like this or even Crest strips is to dry your teeth off with a tissue before you actually apply the product. I think you get a little better result.
I have in the past used Crest Strips and I think they are still the best. But if I'm short on time- Luster does the job quicker.
Also if you don't want to purchase a whitener there is also HOMEMADE whiteners. Check out the ONE Dr. Oz recommends! You can easily make your own whitener with stuff you have right in your home! I've heard great things about homemade teeth whitening.