I got offered 3 CFI jobs out of ATP. Ended up turning them down and working at ATP anyway. Any flight school or FBO that turns away a perfectly qualified ATP graduate just because they are from ATP, isn't worth working for anyway. They're just jealous that while they putt around in 152's all day, we're flying twins.
I know a guy that instructs in 172's, makes more money then me. But yet he tells me all the time he wishes he went to ATP and got a job here. Because while he's still flying 172's 6 months from now to build his total time over 1,000hrs, and has to buy time in a twin to meet the multi requirements, I'll be on my way to the next level before him. At times I envy his job because he trains Private pilots and makes decent money....but then I hop in the Seminole and feel much better.

Not to mention we train IFR guys all the time, so my IFR skills have greatly improved. Teaching Private pilots all the time doesn't do much for solid IFR skills and procedures.
This debate over the quality of training at ATP is getting old. I think their performance speaks for itself. I scored no less then 88% on any written, didn't fail a checkride and now as a CFI I have 15 sign-off's with 14 first time passes sent with over 7 DPE's. Go to ATP, don't go to ATP, I don't think you'll hurt anyone's feelings. Ratings are ratings. Get them in your pocket and strive to be the best pilot you possibly can. You can be successful training at any school or FBO. You will only be as good as you want to be. I tell this to my students all the time. I constantly raise the bar and get them to perform above their level. My philosophy is, if you're going to be a Professional Pilot, then be a Professional Pilot. Don't sell yourself short. Demand the training you want, and most flight schools will give it to you. ATP provides a great atmosphere for training Professional Pilots, its just up to the students to get the most out of it.