hoho,
In my opinion, Balboa will be a better choice of the two. It is not the same as MIM. MIM sling is juat a piece of cloth whereby you adjust to the size you want depending on what type of carrying style you want. For Balboa, it is a pouch (similar to pouch slings like Pupsik and MIM Pouch Sling), but with the added advantage of adjustable size. The little tail you see is just for you to adjust it to your fitted length and thereafter you don't have to adjust anymore. For Balboa, the pocket in which you fit the baby is also very generous. I brought my girl out in the Balboa for the first time yesterday and when put in correctly, she was really comfy as well as toasty! Haha, good for aircondition place.
For Pupsik, it will be a good carrier if you just want something for short errand trips. But if you are looking for something for that purpose, then I think MIM Pouch Sling will be good enough. Cos without the slightly cushioned edge, the MIM pouch sling can be folded into something very compact and kept into your bag. Mummies who met me yesterday will know I don't like bulky bags
So, if you want to pass the sling around to helpers, get either MIM or Balboa. But for MIM, you must first overcome the steep learning curve but once you have gotten the hang of it, it is quite simple to use, really. I used MIM sling exclusively for my #1.
Alfafa,
When I put Kaeris into the Balboa after our coffee, I managed to place her in another position which she looks a lot more comfortable in compared to when I first met you all

Must remember how to achieve that the next time!
