I, for one, had some terrific fishing experiences in TX. The streams of the Hill Country are spring-fed and clear, though mostly too warm for trout. Once you tie into the largemouth, smallmouth, and Guadalupe bass (State Fish!), Rio Grande "perch" (actually a cichlid that's kept in aquaria by some folks), and LARGE sunfish of several species (bluegill, green, longear, readear, redbreast, warmouth, spotted, and even a few rock bass), you won't much care. And most of these fish love to sip caddisflies off the top in the evening, sometimes feedling in large pods so you can hook one on just about every other cast. Pond fishing ain't too bad either - I found a stocked but UNFISHED pond in a natural area with 20" largemouth (caught one that size, had another suck a bluegill off my line), bluegill the size of my hand on spawning beds, and even some channel cats that hit flies (1st time ever for me). My first couple of years ther I mostly fished with spinning tackle, but in 2005 I used almost nothing but fly rods. Oh, if you like HUGE smallmouth (3-6 lb. class), check out the (remote and and little-fished) Devil's River (and a few tribs too). It's been written up recently, I believe in American Angler. Flies that worked well for me down there were elkhair caddis and chartreuse woolly buggers (plus some other streamers, a few nymphs, and deer-hair poppers of various sizes, especially SMALL for the big sunnies).
Before I moved there, I thought TX was nothing but pancake-flat cattle ranches as far as the eye could see. Much of the northern half of the state is, but the Hill Country is simply spectacular - and full of fish! Go check it out next time you're in Austin or San Antonio (or my favorite place, San Marcos). Don't forget your elkhairs and chartruese buggers!
Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...