The mad scientists at Infusions Of Grandeur have, in my opinion, conducted a fantastic experiment. They made an apple-infused vodka using 4 different methods, and chose the best one in a (near) blind taste-test.
This is the type of experiment that brings infusions to another level. Read about it here: Results of the Big Experiment (finally!).
If you do infusions, especially if you are just starting, you should read their entire site. They don’t just try random recipes, but explore the methods and talk about the results in detail. The information they share is a great boon to the infusers of the world. I learned more in a day spent reading their site than several days reading two books on infusion. There is just no comparison. Highly recommended.