So I bought a package of the new version of goodnites last week, and here is what I have noticed:
1. The new design is definitely smaller, so if they barely or didn't really fit you before they won't fit you now and will be even tighter and may even rip.
2. The new design is definitely less absorbent, I tried wetting them slowly and quickly, standing, sitting and laying down in different positions and they just don't hold as much anymore. No matter how I wet them, they just won't hold as much as the older design, the older ones swell up more and hold more, the newer ones only hold so much then leak, where the older ones can still absorb more.
3. The new designs are quieter and are much softer and comfortable even after wetting them, and being in them all day while pretty wet (but not soaked to the point of leaking). The new designs keep your skin drier, until they reach their capacity obviously (which is less than the old ones). The older ones didn't keep the part touching your skin as dry.
4. The new designs have a different smell and seem to have a bit better odor control until you exceed their capacity, then it is compromised.
So overall they are more comfortable and are better for their target group, but they are worse for those of us that are adults or larger etc.
Here are my suggestions after trying the new designs, for the L/XL, if you are a guy and have a waist size larger than 30" then these definitely won't work as intended, if you are between 28"-30" you should be okay but may still have problems depending on the size of your anatomy and the rest of your body's size. Also if you are a heavy wetter (go a lot at once before they can absorb) these will not work as intended obviously and leak out the sides where the leak guards are.
If you are a girl and can correctly fit in girls size 14 underwear or smaller then these should work well for you and fit you correctly, size 16 is borderline.
So in short, if you cannot fit correctly into boys size 14 underwear or girls size 14, you are going to probably be disappointed and the product won't perform as intended. If you can fit correctly into size 16 boys or girls underwear, you might still be okay, but you more than likely will not be able to have one full wetting without leaking and may experience ripping or they may be too tight and uncomfortable. My brother with a 32 inch waist experienced ripping shorty after putting them on, and gave up after trying about 4 on and having them all rip.
I am 6'1" and about 135-140lbs and have about a 28" waist and the older ones fit me nicely with room to spare but these newer ones just barely fit me comfortably and were a bit tight honestly. So if you are larger than 28" waist, I would definitely stick with the older design for as long as you can find them as you will have better results.