Without doubt I prefer small Hobs and Jills. I'm not saying they're any better, but the type of ferreting I do; they work better for me I've worked all sizes over the years, but certainly seem to get less lay-ups with the smaller strain? For sure there are situations where they'll get a kicking from a "stayer," but they still seem to move them? Are they small enough to get behind them, I don't know? But before any of you state; no I haven't got "ferret cam!" I rarely work warrens of over twenty holes, so they don't tend to run out of steam. Each to their own............