Transitioning out of swaddle

Since my little was born she's slept in halo sleep swaddles & they've been a god sent! she sleeps straight through the night. Now that she's almost 4 months we're thinking it's time to transition her out of them 😫 she still sleeps in a bassinet in our room but soon she'll be moving into her own room in her crib too 😫😫😫 I've researched and it seems the Merlin sleep suit & the zen sack are the most popular aids in using for the transition. Has anyone used either & what was your experience with them? Thanks ❤️🤗