Clear coat protects your paint so Id definatley use it. It gives a really glassy shine to your models and enhances the colour beneath!! thats with metallics! With my models i only use prof 2 pack car paint and then spray and bake it in a professional 1:1 oven. Cant beat two pack... I prepare all my car bodies before i go down to my friends spray booth/oven and primer/sand/colour/clear coat in one day.