I have a Pikkolo and a BabyHawk MT.

If you're slender, the Pikkolo can be a pain, in that the buckles end up in a harder place to adjust.

If you're going to use it for more than one child, I'd actually suggest the BabyHawk, because you don't need to re-adjust the buckles for each child. I thought the straps would be tricky, but they're a piece of cake, you'll get good at it in no time at all. My boys love the BabyHawk. Plus they're pretty. (and it can be used inside facing out if DH is too manly for your pattern.

They're both good. Si lived in the Pikkolo as a newborn. If I have to chuck someone up there and I'm on my own, I'll use the BabyHawk (because of the buckle positioning for me). If I'm out with Dh though, I might use the Pikkolo and get him to help with the straps.

I find both the carriers comfy.