Electrical Billing Help

Hi Everyone. Need some help/opinions on a cheap electrical provider. Moving to Houston in less than two weeks and I'll be living in the 77002 area code. I checked Powertochoose.org and the names that popup are:

-Energy Texas

-Infuse Energy

-Discount Power

-Cirro

-Direct Energy

-TXU Energy

-Reliant

Has anyone had any experience with any of these companies? Could you possibly recommend a good cheap provider in the 77002 area code? Any help would be really appreciated.