Yeah I'd recommend them. Perhaps the bunching depends on what brand you use? I'm not sure. I've used Eenees liners, cut in half, and they've been fine. I also use fleece or minky liners (if I use a liner at all), but if I suspect a poo's on the way (especially a schloppy teething poop), then I'll pop one in.

I find there's not much use in using a liner with a purely breastfed bub (poo is so runny that a liner won't contain much), but once they start solids, liners start to make a lot of sense.