I would say that all depends on a couple of factors depending on the situation.
1. How absorbent is the diaper and what over all quality is the product.
2.Where you buy it from is it online or from a shop and is it a sample or a bag/box.
3.what situation was it an emergency, did you need something before you made a mess of yourself?.
4.what country you're in when you bought the product as some variations of the same product are not always the same, and the products are either worse or better depending on the manufacturer.
5. Cost how much they cost you also has a direct bearing on the overall quality cheap ones aren't generally good ones although expensive ones are sometimes no better I would recommend premium products that you know work.
6. Is the diaper the right fit, too tight and its uncomfortable and will rip open, and too baggy and it will leak choose the right size and absorbency before you go out.
Personally, I review every product I have tried and yes I do read reviews before I make a decision as to where to buy them.
The best ones I've found so far have been either Bambino Classico or Cuddlez/drydayz or other brands such as Tena or Abena all either I have bought online or in the stores in the UK or abroud.
As for the worst ones again those were either bought online or in store read my upcoming reviews for details.
Yours sincerely
Chinababy888.