I'd suggest the OP for now. One, who knows how long the outlets will have it? Pirata will *probably* last longer and you have a better chance of picking up a Pirata bag in a couple months than the OP which seems to be wildly popular right now.
Two, generally, I would agree as well that Pirata does look better on a bigger bag due to the print. I do actually have a Pirata in bambino and I got very lucky with my placement (I either have full heads or the girl sitting down so her head's not cut off, so it CAN work on a bambino but it's tricky.) Oddly enough, my zucca actually has more severed body parts than my bambino lol. My 0.02.