We were looking for a no nasties diapers. Gave two brands a try - Thank You and Tooshies. Between the two, we have reordered Thank You over Tooshies. We have found Thank You to be better fitting for our bub. It also helps that Thank You nappies had the wetness indicator (the line that turns blue) while Tooshies don't.
We haven't tried other brands (nasties), so cannot compare directly with them. But for us, Thank You is doing a good job and we have reordered with Amazon. Fast delivery as always. Highly recommended.