The difference between the profi-pack and the weekend edition kits is the box content. The Weekend Edition kits are the basic ones of the Profi series. No additional resin parts, no photoetched sets. Just the plastic parts. The decal markings are for from 1 to 4 planes usually. Contrary to that the Profi kits can have different markings for eight planes of the declared variant. Anyway, the all plastic sprues of the WE kits allow to assemble a good model.