I did love Blueberry but I found after a while they just stopped being absorbent and would leak at the waist very quickly and around the legs sometimes too. I stripped them but it didn't help.
(Stripping is where you wash the nappies and rinse over and over to make sure all the detergent is out, sometimes cloth nappies stop working so well or start to smell bad if there is a build up of detergent)
I keep intending to get some new inserts for them, probably bamboo or microfibre because I love the designs so much.
My Bum Genius have been brilliant. They aren't pretty or fluffy, but they aren't really plastic either, they have a soft waterproof outer layer (PUL is the type of plastic used). BG are almost identical in every other way to Blueberries.
If your heart is set on the Blueberries I really recommend getting alternative inserts for them, but they are so expensive already that having to buy new inserts really ups the cost.