We use unsweetened soya milk a lot, but I can't stand it in tea or coffee. Great for cereals and porridge though even here it adds a pronounced layer of alien flavour that takes getting used to. I like to just drink it on its own too. Your subs are, on the whole, replacing natural products with artificial concoctions. There's nothing natural about margarine, despite the efforts of the industry to rid it of trans fats. The oils often have to be deodorised and coloured up, as well as hydrogenated, to make them plausibly like butter. I've yet to taste one that doesn't have me thinking I should be using it on my bike hubs instead of my sandwiches. The Cornish butter I buy contains just one natural ingredient. Not even salt for me. It's delicious!