After being without electricity for 2 weeks due to Hurricane Rita in 2005, I bought a generator. The one I decided on is a Briggs & Stratton, 3750 Watts, Model No. 030238. I chose this one for several reasons. The first consideration was cost. I wanted one big enough to run a window unit air conditioner and not have the cost of a unit big enough to run a lot of appliances. My main concern was to be able to stay cool and sleep at night. Another consideration for this particular unit was that it was moveable without picking it up. It has 2 wide wheels on one side and a swing out handle on the other. The swing out feature is nice for storing. While the unit is still very heavy it can be moved up or down stairs. It is easy to operate - you just fill it with gasoline, make sure the oil is at the proper level, prime it and pull the rope. It has a start action like a lawn mower. This generator is not in the high dollar category even though it cost $500. It is NOISY - if you live close to neighbors just hope they are running a generator at the same time. The more expensive models have better mufflers, from what I understand, but you pay a lot more for that feature. This generator has a 4 gallon tank, it gets very hot as all generators do, and should NEVER be used inside an enclosed area. It is a life saver when it's hot and you have no electricity but you must follow the warnings and instructions very carefully.