Heller's representation of this enormous rocket is very good, at least according to my limited resources on this particular subject. The third sprue contains all the extra little goodies like exterior electrical conduit and engine vectoring solenoids. The decal sheet and painting diagram are generic with the ESA logo, flags and the paint scheme found on the first few launches. Decals for these markings are not present in this kit. So a mission specific rocket needs custom decals.
Instructions are pretty basic, but useable.
I am very pleased with the quality of this kit. The detail is very crisp with fine scribed lines everywhere. The insulation panels on the main rocket fuselage are appropriately shown. Unlike Heller's Ariane 4 kit, the rocket engines are nicely done, with the engine shrouds coming all the way down around the pumps. The SRB attachment points are accurate, but a little fat.