If you are choosing between them: buy on the face, not the gear. The accessories are broadly similar across the range. What actually differs from one to the next is the expression, and the expression is the entire joke. Look at the head before you look at the harness.
If it is going to be opened in front of other people: this is the one thing in the store that survives that. A bachelorette, an office secret santa, a friend's birthday where you want to be cheeky without making anyone uncomfortable. It reads as funny rather than as an interrogation.
If you are posting it rather than handing it over: keychain, not full size. A full size bear needs a box. A keychain goes in an envelope, a stocking or a gift bag for a fraction of the cost and postage, and it lands the same way.
If you want a particular one for a date that matters: buy it when you see it. Stock here is seasonal. These sell hardest around the holidays and Valentine's, and they do sell out.
If it needs cleaning: spot clean only. Plush with leather and metal trim does not survive a washing machine. A damp cloth and some patience, and it keeps looking right for years on a shelf.
If you are trying to raise the subject with someone: a plush version does it without any pressure at all. Plenty of people have started a conversation with one of these that they could not have started any other way.
