I've never found microfibre inserts very absorbent, and didn't get on well with BG V4 for my boy. I think it was because of the insert rather than the waterproof outer, because I think the BG flips and organics are great. You could try using them with a bamboo insert or booster as Pickle suggests. Also, when you wash, only use a fraction of the recommended amount of detergent. I do a 30 quick was first with no detergent to rinse the nappies, then a 60 degree wash with about a tablespoon of powder bio detergent (daz), and then sometimes an extra rinse if required. I find if you use too much detergent that can make the nappies more leaky. It's definitely worth trying out a few different types to see which works best for your baby. If you want some bamboo boosters I have a few I don't use (like new) that I'd be happy to sell on cheaply.