VERY good advice. Really. I've made that mistake, professionally and personally, on hardware. And lived with the consequences.
An implicit assumption in there is that all of the steps have similar -probably low- risk. That is, you're pretty sure to certain that Rapidturn WILL work; and similarly, Slant Pro WILL work and is a better longterm answer. Skip the first step for sure. Incremental approaches are usually more costly, but worthwhile when one of the steps is high risk. When each step is very likely to work, skip steps; you'll save time, money, and skull sweat. And get to profit faster.
I hate to give Stephen Covey credit for anything, but when buying big iron, start with the end in mind.