You can go with the standard generic replacement battery from Autozone or Murrays. 24/25 group size.

You live in Dallas..some cold, but you need nothing higher than 650-750 CCA.

If you want an awesome battery, Optima red or yellow top. You can definately use a deep cycle battery and they are made for cars. I used to use them for competition in audiophile, but deep cycle auto batteries are a great investment. They also have their place for a car that may suffer heat soak starting issues. These batteries recharge slower and last longer on restart attempts. (Being from Dallas area)

You may not necessarily "need" a $149-$189 battery, but if you are running a lot of accessories, (fan, stereo, A/C) and your alternator output is stock, say 39-55, either upgrade your alternator, battery or both.

I have had no real problems with a $70 battery, but I really like the 12 year service life I have gotten out of my Optima battery. Twice the life and worry free pays for itself.

The red is a great replacement. Yellow if you have high draw fans A/C or high end stereo system. My 96 WS6 had 6 amps drawing off one 175 amp alternator and two Yellow Optima batteries. Your alternator is likely 1/4 of this and either upgrade your alt. output or use a better battery.