Nappies for 6 month old - they ALL leak?

[Pampersfail]

We are having multiple daily leaks (usually just poo and usually when in the car seat). I have tried Pampers (both baby dry and premium protection), Aldi, Sainsbury's and Asda’s own brands. I’ve also tried sizing up nappy, and sizing up vests incase they were too tight.

Can anyone recommend me a different nappy brand which works for them?

We've used Lidl own brand nappies from day one and think they are great. We've recently started using Waitrose own and think those are even better - slim but super absorbent.

I have not found a disposable nappy that adequately contains pre-weaning poo. But as he is 6 months now this shouldn't be a problem for much longer!