Which is the best diapers you've used?

My little guy is 6 months old and 19 pounds. We recently moved him up to size 4 diapers, and got him overnight diapers. He has been having poop blow outs during the day and pee leaks at night. Last night his Pampers Swaddlers overnights leaked. He had two poop blowouts today! He was wearing huggies snug and dry when he pooped. Does anyone have any diaper recommendations to try?! Thanks!