David and Katie are great, they really are. I’ve enjoyed MPU, like most of you have, for years. I’ve bought the books, the scanners, implemented the workflows, heck, my paperless workflow is still a derivative of David’s book. Most of all though, I’ve bought the apps. Lots of apps, and there’s a couple things to say about that.
For one, I like being part of the Mac community, always have, and I like supporting independent developers. Secondly, many times indie devs have more incentive to make their apps the best they can possibly be, and I’ve often found that the smaller, and older, the team, the higher quality the app. For example, BBEdit, MarsEdit, Keyboard Maestro, Acorn, etc…
However, there’s another aspect to this discussion. You don’t buy your way into becoming a power user. You become a power user by understanding your Mac and knowing when and where buying an app makes sense in your personal workflow. I’d argue that if you’re not writing code, BBEdit is probably not for you. If you don’t already know that having a text expansion tool will save you hours of work every year, than it probably doesn’t fit into your workflow and doesn’t make sense to buy it.
Having a ton of system modification apps running doesn’t make you a power user, but knowing which ones to run and why does. There are things macOS doesn’t do that you might find useful in a third party app, but understanding the what, why, and how is the key.
And finally, and most importantly, have fun! In the end that’s what this is all about. Get your work done, do it efficiently, and have a good time doing it.