I've been to an FBO, DCA, and ATP. I don't want to change your mind, if you have already made your choice, but hopefully my little speech can help ya. An FBO is always a great place. It is usually cheaper, has great service, and everyone there is usually nice. At DCA, it is too expensive, takes a really long time, doesn't have real regional minimum agreements, but has probably the best training from what I have experienced. At ATP it will be cheaper than most accelerated programs, get you done in a timely manner, they have the actuall lowered regional minimum agreements (I actually just talked with a recruiter that came by the school to try and find some pilots) but isn't really the best training. I did my private and instrument at an FBO, and my commercial single and multi add on at DCA, and then my CFI's at ATP. My advice is to make sure that you have a great instructor cause it will make all the difference both in training and in cost. Hoped this helped!