Propel kiwi strawberry is one of my favorite flavors. It hides the chlorine flavor in tap water pretty well.
It dissolves easily in water, but sometimes the packets are hard to tear open. You can make it in a 16 ounce bottle of water and it has a stronger, sweeter flavor, but I like to make it in like 25 or so ounces of water in a shaker bottle.
I like that it has no sugar but still has the electrolytes.