Absolute favorite and most often chosen (only within the last 4ish years)....water....filtered water nowadays, thanks to f'd up water ways. It's the foundation of my daily/morning hydration routine....water/lemon water/herbal infusions.
Next favorite is fresh fruit/veggie juices...especially carrot/orange/ginger, celery/apple/ginger, watermelon/lime/basil (when I remember to add it), and beet/apple/cucumber. I like to add lots of greens to my juices, too, especially dandelion, romaine, spinach, kale, etc., and fresh turmeric root when I have some on hand.
Favorite frozen beverage is frozen bananas/cacao powder/nut butter/vanilla extract or bean....it's like a milkshake. I tend to toss in some hemp hearts, chia seeds, or flax meal, especially if it's breakfast time.
Favorite warm beverages are herbal infusions, or teas as some prefer to call them (stinging nettle/red clover/burdock root/dandelion root/ginger root/etc.) and hot chocolate made with almond milk/cacao powder/reishi mushroom powder/maple syrup/cayenne pepper/cinnamon.
Favorite "treat" drink that helped replaced my addiction to sodas and beer is kombucha....especially ginger, on tap. Yum!
I used to only choose sodas, sweet iced tea, (both super-sized) coffee (all day long with french vanilla creamer or two sugars and some cream), frappucinos, and beer and thought water absolutely sucked due to there being no flavor for the first 4 decades of my life.