There are some really stupid advertisements on television. But some are good. If I were to choose certain companies or brands based solely on their advertising:
Transportation: I would purchase a Ford truck F-150. Their advertisements are visually appealing, with just enough humor. Good colors, good font, not sappy. I do not like car advertisements that are sappy.
Insurance: AllState. I really like the AllState guy. Are you in good hands? His voice is just so pleasant, and it is a good catchphrase for an insurance company. (Traveler's comes in a close second, but they have not had advertisements here for as long, and at the endings of their commercials, a person reaches out of the frame to pull up an umbrella out of where the text is, and that annoys me. But the rest of it, very visually appealing.)
Soda: Coca-Cola. I love their commercials. There are few that I have not liked over the years. This one is probably my favorite. I also especially like one of their most recent ones, which encourages recycling. The ending is precious. (I can not find it on youtube, though.)
Alcohol: Budweizer. I strongly dislike Bud Light's advertisements, but the ones for Budweizer almost always make me smile. I love the ones with the horses especially. Like Coca-Cola, they tend to put out "feel good" commercials, and those work for me. Or, they would, if I were the sort of person who purchased according to what I liked on the television.
Jewelry: Kay Jewelers. With the exception of their recent "In all the years I've been coming here, I've never seen a storm this bad" advertisement, which is just too rediculous for me, their commercials make me tear up. It is all right to be sappy when you are advertising jewelry - they do so without going over the top. Also, Every Kiss Begins with Kay is a clever slogan, and one that they have had for a long time. I do not like it when companies change their slogan, so this puts them even higher in my opinion.
Blessings on your travels,