First I would like to apologize to the readers not in the United States, I have not had a chance to review any bunkers built out side of this country. I would think, that they would be similar in construction. So,  I have five companies that I will do a quick review over. I have added each companies web address above the sample picture of their product. First, all of the different bunker designs come furnished, they all come with a filtration system, they have sleeping quarters, kitchens, bunks or beds. Really, I cant find much different as far as the equipment that come with the original price, for each bunker. And as far as quality, it seems that they are all made of durable material, that has been well designed and tested. I think that it comes down to what you want. If you have the money to buy one, it seems that the Hardened Structures and North West Shelter System might be the higher cost. I figure it is because they are made on site.

Hardened Structures =Underground Shelter Systems – concrete structures, tube style structures. Virginia, http://www.hardenedstructures.com/genesisseries.php

North West Shelter System =Disaster Bunkers - concrete structures, box style structures. Idaho, http://www.northwestsheltersystems.com/process.php

The Rising S Company and Deep Earth Bunkers produce their bunkers off site in their warehouses. They are similar in design and are made from welding steal together to make the structure.



Rising S Company = Steel Storm Shelters – metal bunkers, built from scratch, similar to containers. Texas,  http://www.risingscompany.com/oil.aspx

Deep Earth Bunkers = Steel Storm Shelters – metal bunkers, built from scratch, similar to containers. Texas, http://www.deepearthbunker.com/dealers.html

The Utah Shelter Systems and Atlas Survival Shelters use corrugated drainage pipe as a raw material. They cap off the ends add doors, then use smaller corrugated pipe to make the exits. It is a smart idea and simple to outfit, and it gives a lot of interior versatility.



Utah Shelter Systems = Corrugated drainage pipe. Utah

http://utahsheltersystems.com/shelters_customizing.php

Atlas Survival Shelters = Corrugated drainage pipe. California

http://www.atlassurvivalshelters.com/

Over all it depends on what you want and can afford. I have seen bunkers from over a million dollars to this small Atlas above for $29,900. The nice thing is that they come ready to bury, you don't have to do much work. But, I think you could still do one your self, using a container or a corrugated pipe, and reinforce it and equip it cheaper than a pre-fab one. Anyway, out of these companies I think I would use the Rising S Company, based on the location of the company to my land. The one that I like the best is the Utah Shelter System, based on the simplicity of the design. But, they are  far from home. Over all the five companies have great products and I am glad to see we have more than one to choose from.