The degree and university will depend on what side of the Atlantic you are aiming for. In Europe there is not as strong requirements on university degree for any major airlines versus in the US it is a requirement for them to even look at your application. In the US ERAU is the most recognized aviation university that does provide very good alumni networking after graduation that will help you in your career and in Europe Cranfield is well respected. Again, the degree is not going to get you there by itself without any other experience so it will only complement your flight experience to a good package.
If you do decide to get a degree then broaden you spectrum with something that you can use both in you aviation career and outside of that as a backup.
Regards,
BVF