Go to www.powertochoose.org and you can compare all the suppliers in the area.
We were very loyal to Reliant for years. When all then changes started taking place with companies, etc, we checked out this site and I emded up signing a 1 yr contract with Champion. I'm currently on my 3rd yr contract with Champion and we have had no issues whatsoever. My locked in rate is less than 9/kwh.
Oncor just installed the new meters in our neighbohrood this weekend. I assume everyone will have an increase of some sort due to this change.
All in all, our electric bill for the last 3 summers with Champion has not been over $400. We are not very conservative, I run appliances when needed, I keep my house cold because we work from home and we have 4000 SF space being cooled.
I was happy with Reliant and happier with Champion. Watch out for the Stream people though.. that is an MLM. if you ever need to contact Campion or Reliant, there are "real" people on the line who actually work with the respective company, not a MLM.
Our water heater is gas so that might make a difference. our gas bill in the summer is less than $30.