Hello everybody, I retired a couple of months ago and now I have time to bowl more. I am in 3 leagues at 2 different houses. So I am looking at 2 different ball spinners, Innovative 1/2 HP and Vertex 1/2 HP which one is better ? I am also looking at Vertex ball reviver and Salmon Creek Nu- Ball , So what one of these is best ? I would like to do my own ball maint. Thanks.