There are a lot of web hosting providers that offer money back guarantee and if you are looking for reliable host I think that the comparison research is a right way for you to pick up the best option available in the market.
I suggest you to compare:
Aspnix.com
Glowhost.com
Lunarpages.com
Choosing the right kind of web hosting service can be a very daunting task, so take your time and compare their offers and choose the most appropriate one.