dan and greg i reckon the cheap jigs are no where near as good as the more expensive ones, they may look the same to us but once in the water the natural presence of the jig will be lost and in that case you will many squid.
i reckon the good jigs will get you squid on those harder days when they are not feeding as hard.
i think also know matter how good you work that jig it is irrelevant if your jig is of poor qaulity,