Well let me tell you some experience related to this airport is that I have traveled so many times from Delhi airport.It has the great accessibility and the fast service.
What I have found is that you have the great wifi range and I can use internet from any terminal. Well more important you dont have so much security .Everything comes at ease.Well this is the main hub airport international as well as the domestic and so many terminals .Still I find to easy to locate each and everything.Even we have the access to the cabs outside the airport and it gives help to the passengers .
Even the cabs are available in the run off which collect passengers from entrance to the plane exit.This is really interesting as everything finds easy at delhi airport.So I suggest this is one among the best airport I have ever seen.