well, I don't own an Enfield or a K-31 yet, but I love the no. 4 and K-31.
of what I own, I find myself always wanting to shoot my Austro-Hungarian M1895. it's fun, it's accurate, quick to reload, and light and handy. if only ammo weren't so scarce. I really need to get into reloading. my Mosins are jealous of that grandma. especially since she looks better than them, even though she's 40 years older! (1904 manufacture, BTW.)