Though you mention interceptors,which would put you in the realm of F15, AEWACS etc,as an all round aircraft with a basic military air defence capability for our purposes you would have to go for the F16.
We are not expected to have long range interceptors flying CAP 24 hours a day,but what is reuired is an aircraft capable of finding,identifying,fighting and neutralising any possible threat. The F16 would also be more flexible for whatever other roles would be asked of it,should we ever have an air arm capable of carrying out military tasks,such as arial recon,ground attack etc.
The potential payload itself should sell it,combined with its popularity among other EU air Forces.