C&S has an excellent reputation. They'd timed, tuned, and accurized a Colt OMS for me, and also remounted the barrel after truing the forcing cone. The work was clean and very well done. I've also purchased the parts that they make - e.g. their 1911 trigger group kits.
The owner, Bill Laughridge, is a well regarded pistol smith.
The downside of having C&S work on something is that their wait time is about a year, and then however long it takes them to return the gun.
What do you want to have done?