Okay, I realize that Ilka's not a Dobe, but this is a question that applies to all dogs, really. What type of dumbbell you experienced obedience people reccomend? I know for a fact that she HATES the plastic one I got her, so I definitely need a wooden one. I am looking at J & J's dumbbells, and am pretty sure about the size I need. The question is, which one to get? Solid one-piece, regular three piece, plain unpainted, or white painted ends? One of each, painted and plain? Help?