reference sings to you more ? Do you prefer 1) the chrono + worldtime or just worldtime function, 2) guilloche on 5930 or the sunburst guilloche on 5130 ? , and/or 3) dauphine hands or scissors hands ?
Personally I enjoy the 5130G more because of its iconic hands and its thickness. I also find that the 30 minute chrono function not particular useful.
Let us know what you decide !