If I had to pick one, I'd pick SPIN Selling as feverishaaron said. It's a lot more how to and broken down into steps. Selling to VITO is also step by step, but

If I had to pick one, I'd pick SPIN Selling as feverishaaron said. It's a lot more how to and broken down into steps. Selling to VITO is also step by step, but SPIN Selling approach makes more sense to me.