We've used the stay dry ones on both Toby and Rowan. They do need the snap in booster to last any length of time (can get about 3-4 hours out of a boosted one). They aren't the slimest of nappies and are pretty boring to look at but are easy to use (ours go to nursery with Rowan) and are really pretty bombproof, especially with a ME wrap. They also last. We used them for 2.5 years with Toby and are still going strong with Rowan. They also dye well (ours are now pink and purple) is you want to make them look more pretty!!
They did last to PT with Toby but he was very skinny. Not sure how well they'd fit a chubbier toddler. hth