I've been wearing the nervefull mm as an every day bag for years and yesterday I bought the on the go mm because it was very comfortable when I tested it. I hope I get everything, it's a bit smaller but I like the shape. and because it's not too big, you don't get stuck with the bag when you twist yourself, which sometimes happens with square, rigid bags. I'm also very curious whether it's a bad buy or whether I use it more often.