I' ve got a friend that swears by the Helm Ranch. They seem pretty reasonable and you can access all info via the web. Their site is helmranch.com

I' ve never hunted it myself but maybe it' s a good starting point. Another good idea is to check out the website of www.texasbowhunter.com

There is a complete forum on day leases. They rate them all with lots of hunter feedback.

Good luck on your search.