I usually have a tube of Nuun tablets and a couple of gels for when I need something other than water and I'm not close to a place to buy something. Does that answer the O/T?
I've used individual powder packets a bit, but they kept getting beaten up in my bar bag and a couple times split open, leaving me with a bar-bag-bottom full of fruit punch powderdust. Add reaching into the bag with sweaty meathooks and just imagine the fun. Riding through/sleeping in bear country smelling like fruit punch is considered poor form in many circles.
I like the tablets because they fizz a little, too.