Compared to the others, GigaPros give more bang for the buck in their different hosting packages. Other companies limit how many domains you can use and then give you great amount of bandwidth... and everyone know that with most domains you won't be able to use that much bandwidth. It's like a popular web provider offering 1 month free of using the service. Sounds impressive but is unrealistic.
Just as important GigaPros have good customer service. They are quick to resolve issues and patient when things are not easily understood. I really enjoy my hosting experience dealing with them.