I love the weenotions night notions (WNNN)...we had fit issues for a bit but are getting on with them great again!
They can get very expensive if you have embroidery etc but if you keep them plain and simple then they are a really good budget night nappy, they are our favourite! We have minkee outter and cuddlesoft inner and to buy them new i think they are around £15 plus postage. If you choose fleece/minkee or cuddlesoft inner then they are stay dry...you can also use a fleece/minkee liner too
puddlekins also do a night nappy, i have one on order atm but they are around £22, Luscious little somethings (LLS) also do them but they are between £22-30? ish, bedbugs are around £25...obviously all these prices are new prices and not pre-loved you can probably get some bargains on classifieds
From experience i would say that Weenotions night notions are more absorbant than bedbugs without a doubt! I have a puddlekins bamfluff which i love the fit off, its slightly less absorbant that the WNNN...cant coment on the LLS yet but they get good reviews depending on what you choose for the core materials