As I said in the guide's intro, I tried to focus mostly on products that I have more experience with. I'll probably continue to choose mostly products I have more experience with for future guide editions, too, because it's easier for me to write from the perspective of an actual user.
Wow, what a beautiful gift guide. This was really an amazing piece of work-incredibly professional, and tailored to the needs of us head-fiers! Great job, and I hope we can now expect one every year!