really mate its down to the individual ferret. i have worked both hobs and jills and have very good results with both. both have different advatages, for example a hob is bigger and is less likely to be kicked about but if a rabbit gets "dead ended", the jill can get round him easier to bout him. also i find that if the jill lies up, dropping the hob in will knock her off the rabbit and both will come out, it saves on digging.