We have oat milk, it's thicker than rice milk and way less expensive than almond milk. You can also make your own rice or oat milk much cheaper than buying it (although we still by it). What kind of cooking do you do with milk? I make spelt bread in the bread maker with it, I also make my muffins with it, pancakes... ummmm can't think of what else now but whatever I put milk into it works out ok. Oh that's right I have made custard and yoghurt with oat milk a couple of times too. you could also cook with coconut milk/cream if you want something thicker and richer and they are really healthy for you. Regarding soy milk, it would have to be the must unhealthy option, most soy is GMO and it's not the best for hormones especially in a male.

just forgot to add that I have cooked those creamy packet pastas with oat milk and they turn out fine