I've used Comotomo bottles for my baby, and they worked well for us. They do have a soft, squeezy feel that seems to mimic breastfeeding, and the wide neck makes them pretty easy to clean without needing a special brush. As for colic, while they did seem to reduce gas a bit for us, every baby is different. When transitioning, it might help to introduce the bottle gradually and during a calm time when your baby is not too hungry. Good luck!