I have mainly used Costco's (Kirkland) vanilla, but now they don't have the Madagascar Bourbon (MB) on the shelves...they just have "pure vanilla extract" and to be honest I don't see anything special about it!
I don't think anything compares to MB vanilla!
I have tried Mexican vanilla and don't care for it too much.
I just recently purchased some MB vanilla from this company, which I think is really good...but next time I'm going to order the vanilla from Surfas (much thanks to the poster that gave that info!)
Here's the link to the company, Esco Foods...http://www.escofoods.com/gold.label.vanilla.extract.html
I've also purchased coconut extract from this company and I really like it!