Help Needed: What is Your Ideal Cookie?

Hello, Everyone!

It's that time of year again: time to bust out the tri-fold boards, markers, and a take a trip to Wal-Mart for some cheap craft supplies. Time to browse the internet and formulate a hypothesis about this or that, and to put it all together in an attempt to get an A+.

In short: It's Science Fair season!

This year, I'm going to need some help with my project. I'm studying the science behind cookie-baking, and my experiments will consist of baking several (tiny) batches of cookies with certain variables changed/omitted. Then I get to eat (Ahem. Study very closely and scientifically, of course.) the cookies! That's my job though. Here's what I need you to do:

I would like to know what your ideal cookie is. I'm thinking about factors like;
How chewy? Do you like your cookie soft? crunchy? Oooey, gooey, melty yumminess? Darker color, or lighter? Thick and cakey or thin and crispy?

I'm using a basic chocolate-chip cookie for my experiment, but if you have another kind of cookie that's especially close to your heart - or maybe your tummy's heart, anyway -  or a favorite recipe, feel free to share that, too!