Housing prices in both Dallas and YEWstun will be cheaper than Austin, but there's a reason for that. As you noticed, Dallas is flat for the most part, and seems to be begging tornadoes. YEWstun is an urbanist hellhole--high concentrations of people, flat, humid, and sublime criss-crosses of freeways going every direction. No offense to anybody who lives there--I have two cousins there, along with friends.
We just did four years in the Atlanta area, which we hated, and we just relocated to the Austin area last month, after years of trying to sell our house in GA. I had several opportunities to move to Dallas/Richardson/Plano for work, but as much as my wife disliked Atlanta (can't stress that enough), she didn't want to move to Dallas.
Now we're in Dripping Springs, and I work out of my house, similar to your situation. DS is beautiful--we have acreage, views for miles, and we're in the hills. Dripping Springs also just got a new HEB to go with their almost new Home Depot.
I've made one airport run so far, and it took about 35 minutes, but we're on the far side of Dripping Springs, almost in Blanco County.
I love it out here, and I highly recommend it.