Hugs bother me more, as people who are almost complete strangers often feel that they have hugging rights. Whereas kissing is more intimate, and only very few people would try such, people I actually don't mind.
I prefer kisses or affectionate pecks on the cheek to hugs. I generally don't like the sense of vulnerability that accompanies being smothered with a caring and affectionate hug. It makes me feel like Penelope Pussycat in a Pepe Le Pew cartoon.