Is a collie right for you?
I chose to share my home with collies because I wanted a breed that was beautiful, healthy, highly intelligent (but not TOO intelligent), intuitive, biddable, loving, gentle with other animals, and wonderful with children. I have not regretted my choice, ever.
But collies do have some drawbacks, depending on what you are looking for in a dog. If you are debating between a collie and a few other breeds, please refer to this website for some information about the good and bad points of owning a collie--
Good And Bad About Collies