Just a bit of reality, ERAU is a good school but will give you a stigma. Sorry to say, but its the truth. Some people will immediately size you up judge you based on where you got your degree, looks, age etc... but ERAU has a little bit of a stigma attached to it. Not saying its right or wrong or it should influence your decision, but in a lot of circles ERAU grads get a lot of crap.
In the end none of it matters, Both schools are good and both will get you your flight experience. Purdue will give you more options that are not Aviation related if that matters, and you'll get to fly in more IFR and challenging Wx conditions.