I've got the 'Ace Spine Master' (listed in Kustom King for $118) and hangs on the wall with the weight being applied to the end. This unit is very accurate and easy to use and I like that it doesn't take up bench space. I'm not a mass quantity arrow maker, but for wood arrows, I want them to accurate and when I make my own, I find the consistent spine and align nocks accordingly. I've tested this against aluminum arrow deflection and it's accurate, so for a simple piece of equipment at half the cost of the bench models I'm pleased.