Prep: Flooring samples

I am torn about what direction we should go for flooring.  Mike has allergies and I have a dog.  So, how do we keep the house allergy-free?  No Carpet is the answer.  Beyond that, there are a couple directions we can go.
1.  Laminate flooring
2. Wood floors
3. Tile
4.  Hybrid of the answers above (Cork, bamboo)

Laminate is a great direction because of price and durability. Wood Floors are tempting for resale.  Tile is a choice I choose only if I can get the "wood tile" that I saw in a friend's house. Hybrids are great because they are great for the environment but they are expensive.  Can I justify the almost double cost when we're trying to save every penny we can?



I've Googled and Craigslisted to search for options and found an option to get 5 free samples sent to the house without a credit card required.  So go through ebates - sign up with this link.  Search for Builddirect and then you will get back 2% of anything you pay for at that site.  Builddirect.com is the site that has the free samples.  What do you have to lose?

What kind of flooring would you choose?