Sony designed a handheld gaming console (PSP)
Technique is the way in which an artist creates a work of art, using the media he/she decides to use. The technique and media the artist uses will change the finished results, and the messages and/or feelings it conveys to the viewer.
I would say it is the third one down (visit the restaurants in the same trading area) because that is the only one where you gain the knowledge first hand. When you have middle men (people writing online, people who have visited the restaurant themselves, or members of the BBB) there can be a bias as they may claim the competition is better when it is not for personal gain.
