Reply: Is Ancestry.com the only Online Genealogy Service?

I had issues with Ancestry.com. I do not recommend them as their website seems really slow and my browser constantly hangs. Bad Bad Bad

As my subject asks is Ancestry the only genealogy site worth joining. The few others I have found are:

MyHeritage.com
Archives.com
Genealogy.com
FamilySearch.org

I have seen plenty of TV ads for Ancestry and I have heard it has gotten better with the new website but I wanted to get some opinions before I invest any dollars. I assume moving your family tree information from one service to another would be a huge headache if I ever wanted to change services.