I had a wilkinet with my first and although very comfortable once on, it was very difficult to put on quickly and I often needed help from another person. Now with second child Im facing the nursery run morning and evening and need a comfortable, quick and easy fastening sling so that I can put new ds in it and carry him into nursery. I need to have hands free to collect ds1, his coat, his bag, bend down etc.
ergo baby carrier is pretty good it holds the babys weight against your body fastens with one clip at the back and can be used from newborn-can also be used as a back carrier until child is about 2yrs
costs about 50 pounds bought mine online and its been great looks cool too
I use Bjorn everyday on nursery run to pick up ds1 3yrs, carrying 11lb ds2. Its so comfy. Can't see my feet tho, and worried about getting wet if it rains. I don't know how long its going to be comfortable for but at the moment I love it and wish I had one before with my first.
I think I've tried every sling available, almost and I'd definately go for the ergo every time, the baby bjorn is great whilst they are small , but at 12 lbs wont last long, I've used an ergo on the front and still reguarly use it to carry ds (2 in a couple of weeks)on my back, about a mile and a half most days. It takes a bit of getting used to , but once you've got the hang of it , it's really comfy. ( I really should be on commission)