I picked up a pack of Pull-Ups Wednesday, mainly because of the new Palace Pets prints. The last time I bought Pull-Ups was in 2014; at that time I got the 3T-4T size because they were sold out of the girls' in 4T-5T. I am far too large to actually wear them properly, so I stuff them inside my underwear. Back then I found them to be pretty poor absorbency-wise. I don't know if going one size up makes that much of a difference, or if they've actually improved since then, but I'm kind of impressed with them now. Letting it out slowly I managed to give them about the same size wetting I can give a Huggies Ultra Snug and Dry size 6.
Your experience will probably vary, especially if you're a guy cause I don't have male parts to take up room in the narrow crotch, but I'm pretty satisfied anyway.