Gidday peoples , I am thinking of getting a DriRider jacket , but don't really know which one to get because there are about 3 - 4 different types of jackets. So what type of DriRider jacket does everybody use ?. Does it make that much a difference if the jacket is the shorter Highway jacket or one of the longer ones like the Nordic ? Also , do you buy the jacket a little bit larger so that you can wear thicker clothes underneath the jacket ? I live in Perth . Thanks