I use almost nothing else. Different brands don't vary all that much. 3.8g - 4g is about the norm. Glass bottles have different thickness necks which can cause issues, but cubes go easily into PET bottles, the plastic is thin and so the gap is plenty wide enough.
4g is quite a lot of sugar mind, you'll get a lot of carbonation and will be pretty much forced to cool them to fridge temp before opening else too much foam. So perfect for cider, lager, american style IPAs, anything you want to drink fizzy and cold. No good for ales and the like, I revert back to a plastic half-teaspoon for them.