The $27,900 disappointment? Wilson Audio Watt Puppy 8 issues.

I'm a fan of Danny. Yes, he criticizes things he thinks are wrong. He has decades designing speakers and crossovers. He has mostly been behind the scenes working for other brands.  He champions DIY as a means to achieve high performance with minimized cost. 

The folks that say he is a "salesman" need to understand the time and energy he spends with these upgrades. Yes, he sells upgrade "kits" to folks that want to improve the performance of their speakers, but he doesn't select the speakers to upgrade. Dissatisfied owners do. He does the design work for free, and is only compensated for his time with the profit he makes on these kits. How much do you think his time was worth upgrading these Wilson's? He knows what makes a speaker sound good. He also knows how to identify design choices that make for compromised sound. He sells very modestly priced speaker kits that punch way above their price point. I built the NX-Tremes. They are sublime. Incredible at the price point, and I had fun building them. Win-win.

Don't bash Danny until you look at his entire body of work. He is a huge asset to the DIY community. 

@ozzy62 , I disagree. Forming an opinion with measurements is foolish if you have no experience. Danny's has measured thousands of speakers. He knows what measurements translate into good sound. Obviously,  his idea of good sound could differ from yours, but my personal experience says his good sound meshes well with mine. 

It amazes me how people love bad measuring equipment.  I have listened to many highly regarded audio components and been left cold. If it measures well, I usually like the sound. Some folks like distortion, and that's OK. This hobby has enough variety to satisfy all.