Obviously any company who is going to pay for it is best. If you are looking for an excuse to spend the money go to ALLATPS in Vegas. I went there for CFI school and the examiners are very fair. They are much less likely to bust you for a pay to play program, its not like the guy is giving you the power to teach which at least in my opinion has much more liability. Whoever is giving you the exam knows that in the end when you get hired somewhere you are going to have to go through a ride that would give you an ATP anyway. At least after your done you can spend an extra night in Vegas. Just a question, are you just getting the rating so its easier to get a job?