I've got the one you like and I've been pleased with it. I chose it because I really wanted an 'across the body' bag so that I have two hands free to deal with baby/pushchair etc. and it was the only one I liked at the time (although the dog dropped off it and was lost after about a month!). I must admit though, that now I've got it, I've noticed a lot of other people have got it too so it definitely is 'popular'!
My problem is that my mother-in-law bought me it for my birthday and she would never pay £70 for a bag for herself - as I result I think that she'll expect me to use it forever! Can see it will have to have an 'accident' when I eventually want a change!!!