Do you have Geico?
I used Caliber Collision in Round Rock I think off Mays street near I-35. It was one of Geico's preferred express shops or something like that, but it could not have been an easier process. We have rental cars in our policy and all of that was provided on site. Show up, drop off, get rental, pay deductible, pick up repaired car.
The shop did a great job, but it is a chain so it may vary at other locations. Either way, I'm all about simple and it was very easy both times.