Not knowing the relative sizes of the bags, I would go with one of the last two. The straps seem more functional. Also, I'm not a fan of crossbody bags but it's really what is most functional for what you will use it for.
Actually i don't like crossbody bags either but there is an option to double the straps and use as a regular shoulder bag which is probably what i'm going to do as well. So confusing .... living in Canada doesnt help either we don't have ANY of these bags in any of the stores so I can't really try and see which one looks the best
i'm not sure of the exact measurements between the small and huge hillier hobo, but i prefer the bigger size. i don't think it's as big as the name suggests. i agree with smooches though. the shoulder strap allows for more versatility, so i'd go with the hillier over the asa.