At first I thought I'm pretty lucky as my girl can sleep easily on the bed without any help just need to tap, but as she grow she became difficult to fall asleep, she'll toss and turn until very crouchy, so I started carry shake her to sleep. As times goes by, my back can't stand her weight anymore so decided to try yao lan.
Actually, you need not shake the yaolan very hard, sometimes I just swing the yaolan, my girl still toss and turn in it but she's happier with yaolan than on the bed now.
Of cause, it depends on how you want to handle your child. Cause, some theories that are logical to me may not apply the same to you.
As far as I know some babies don't like to suck pacifier at all.
My eldest girl kicked the pacifier and milk bottle habit when she was 4years old as she felt embarrassed.
For me, pacifier is the first thing I bought for my girl, as I know many babies love to suck for comfort.