N.
G., Please select any other company except TXU. If more people would do their price comparisons and switch based on cost, all the companies would begin lowering their rates to stay competitive.
To find out the best rates for your situation, go to www.powertochoose.org and put in your zip code. It will give you the details about the different electric companies that service your area and will also give you the rates available depending on the plan you choose. Some have no time commitment stipulations, but most of those are variable rate plans which means they can fluctuate. That's what I used on our rent house thru Amigo Energy. It had the lowest rate at .108 per KWh, but there was always a chance the rate could increase. It never increased in the past 4 months though.
I have a fixed rate plan at our home thru First Choice Power. If I choose to switch before 12 months is up, I will be charged a $150 penalty. It was the cheapest rate available at the time I made the switch. I'll choose a lower rate plan once my 12 month contract is up.
I've had no problems with either of those companies myself.
So it's best to choose based on your personal situation. I always try to choose based on price myself. Some people like to choose companies that are environmentally friendly (i.e., "green" or "wind powered"). Those are usually the most expensive plans, but you will be helping the environment.
Be sure to read the terms of service and other company and rate info carefully as they should explain exactly what your cost will be and what the different stipulations are for the type of plan you're considering.
Good luck with your move and bravo for using your power to choose a different electric provider! :-)