I know everyone hates when they ask which one A or B and they get answer C but IMO VaporTrail is awesome. No extra strings or cords on the cables. It attaches to the top limb. Only Neg. Ive seen is that you cant shake your bow around and have the arrow stay on the rest. But Im not going to be tipping my bow upside down or shaking it when a deers in front of me anyways so..