If it is between Death Star and Coruscant, I say Coruscant. The Death Star makes for a cool scene to set up A New Hope and it looks really cool, sure, but it just raises far too many questions. Why did it take almost 20 years to build the first one when they already had the plans but they were able to completely redesign, improve, and build a new one in only like 4-5 years?
Coruscant isn’t as cool of a visual, but it makes a hell of a lot more sense.