I have an Anna and a Dorsett apple, which AFAICT are the only ones that will produce fruit with our limited number of chill hours (somewhere around 300 hours per year between 32 and 45 degrees). Both are supposed to be similar to a Golden Delicious, which is my favorite eating apple.
Thanks. My wife and I picked apples at a U-Pick farm in Mi. a couple of years ago and wished that we could have an apple tree. Hmmm.
The University of Florida has also developed a low-chill (200-250 chill hours) apple variety called TropicSweet. You might be able to mail order it in Texas. It should be available from mail order nurseries, but you might need to hunt a bit. Einshemer is another low-chill variety. You might be able to find Dorsett Golden and Anna in nurseries in Texas. If not, those two, plus and Einshemer are available from several mail order nurseries.
I have Anna and Dorsett Golden in my yard (N FL). The Dorsett Golden is indeed a lot like a Golden Delicious in color and taste. The Anna is partly red and is more of a sweet-tart apple. (Not as tart as a Granny Smith, though.) I prefer the Anna fresh over the Dorsett, but I like fruits with a little tartness - I think it complements the sweetness. It's all personal preference. I have not grown or tasted Tropic Sweet or Einshemer, but I've heard that they are both sweet apples.
In addition to fresh eating, the Dorsett makes a fine applesauce, with little or no sugar needed. The Anna is a good baking apple - it makes good apple pie, etc. It also makes a tasty applesauce, but you'd probably want to add some sugar.
If possible, plant at least two varieties for pollenization. Most of them are partly self-fertile, so you'll probably get a few apples from a solo tree, but the yield per tree will be much higher if you plant at least two varieties.
The main problem with Anna and Dorsett is that they don't keep very well. Plan to use, share, or preserve the harvest pretty quickly.