Glider or rocker?

Cici • Mama and Etsy shop owner! My etsy shop is SerenadeBaby
My grandmother in law wants to get me a glider or rocking chair, I'm not a big person on how comfortable each are as I find anything with pillow or padded coverings to be like floating on a cloud and I could fall right asleep if I wanted to haha. Just don't know which to choose. 

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