I am a little biased towards the CRJ. I've flown on both and talked ot the flight crews, the airline I fly for is taking dilvery of a bunch of CRJs right now. They were choosen because they were faster, longer ranged, carried more payload, quieter, and more reliable. We use them on Jet bridges, the only thing you have to do is remove a pin to drop the stairs in order to attach them. It is a lot easier in some ways as the stairs are there in case they are needed. I've seen American Eagle have to use a difficult set of ground stairs at airports without jet bridges, or when they are inop. The ERJ is more fuel effiecient, a better short hop aircraft from I've heard. It is also a better climber at higher altitude, a down side to the CRJ in my opinion. Although the CRJ wins hands down with engines, they are very similar to those used on S-3 for the navy and A-10s for the airforce, bullet proof.