Replacements For Milk: Soy Milk

Soymilk is the most common replacement for milk that I use. It is easy to find in regular grocery stores as well as health food stores, in both the refrigerated dairy case and aseptic shelf-stable containers (that look like large juice boxes) that don't require refrigeration. The aseptic containers are nice in that you don't have to store them in the fridge and can stock up. However, sometimes they tend to settle a little more (calcium fortification sinks to the bottom) and picky eaters may prefer the refrigerated kind.
There are many popular brands, some organic and some not. The organic ones are often not any more expensive than the non-organic ones, so I choose organic.
There are also many varying levels of sweetness: from unsweetened to plain to vanilla to Silk brand's Very Vanilla (what one kid I know calls CANDY MILK) which is quite sweet. They come in different flavors as well: I've seen not only chocolate and mocha but green tea. Also, some have more vitamin fortification than others.
I look for a soymilk that is significantly calcium- and vitamin- fortified (one serving having 30% of your day's calcium). I also look for an affordable soymilk, for like all milk replacements, soymilk get a bit expensive. I often buy Nature's Promise soymilk which is available at our local Giant Food and Stop and Shop (which is not in our area but is part of the same chain). At $1.29 a quart, it's one of the best prices around for organic soymilk, without going to a big-box, membership retailer like Sam's Club.