Hey hun,
Now assuming you are who I think you are (if this doesnt make sense then whoops - wrong person).
As an FYI, Jake was in itti's at the demo and you saw the small HC still fitted him at 3 months (and still does on the same snaps at nearly 4 months).
I love my Fuzzi's (similiar to HC but a different fit) as I can manage the absorbency. Also, I have more inserts than pockets as they take longer to dry.. it means I am not waiting on nappies.
I also love my itti's. I have both the all in one and the snap in one. I find the AIO are a snugger fit on Jakes small frame, but now he is getting a bit bigger I am finding the SIO is starting to fit him a bit better.
I think its a great idea to use the hire kit to get an idea of what works best for YOUR baby.
Oh, if your kit doesnt have a HC or Itti bitti I am more than happy to lend you one of each of mine if you like
I will say that I am a big fan of sized nappies, OSFA are way to bulky on Jake.