We always used either the HAB or the buckle sling.... like the ring sling but with a buckle instead.... and thats been awesome for when i'm out shopping with trolley i just have her on my hips but its not totally hands free and sometimes with a full trolley it would be a bit difficult....
The peanut sling (like the peanut shell) has been awesome for quick trips to the shops but now i'm going to use the Ergo ALL the time I'm in looooove......

I'm lucky DD doesn't seem to mind her stroller when we are out shopping but I prefer to carry her.... much nicer for both of us