I suppose "best" would depend on what brand of kayak you're looking for. Not all stores sell all brands.
If you read up on TexasKayakFisherman.com (TKF) and use the "Search" function to read some back posts about the brands you are leaning toward, then you'll have a better idea of what brand and model of kayak you want.
On TKF, you can click on "Links" on the toolbar near the top of the page. There you'll find links to some of the major kayak manufacturers. Look through their models and review the specifications for length, width, weight and carrying capacity.
Short and wide = more stable, but slower
Long and narrow = faster, but a little more "tippy"
IMO, the carrying capacity of a kayak should be about 75 - 100 pounds more than your body weight. That will allow you to carry plenty of gear and to be comfortable in the kayak.
Happy kayak hunting!