A wife who doesn't question a new saw purchase.
I covered my butt there rather recently. I asked her to help me in the bidding process for a new saw (up for auction) and showed her the saw's specs. Then I showed her the other saws in the same class that were all priced higher. We got the saw for $35 less that what I was willing to pay if need be. That helped. I also explained that I had a couple of potential buyers lined up who were licking their chops to buy it from me.
This is all part of what marketers call cognitive dissonance reduction. Buying anything new generates cognitive dissonance, both before the purchase and after it's on board. You have to live with it somehow and the higher the unit price, usually the more dissonance that is created and the more that then has to be reduced. Whenever we tell a guy who posts his new saw that he did good, the better he feels because the dissonance is reduced.
However, nothing reduces dissonance more than a saw that starts and runs well and lives up to the buyer's expectations. This Makita 6401 does all that. It's only flaw is that now and then it poops bar oil when it sits a long time, but that's not consistent. It might just be the O-ring cap that needs a new ring, but I've never quite been able to trace it.