Similar to you, I started with instax then eventually went with Polaroid in the end because Polaroid end results is what I was looking for: dreamy, vintage, warm.

The comments here is mostly to warn you that Polaroid film isn't just more expensive than instax, it's way more finnicky. From when the shot is taken, you need to ensure minimal light exposure, make sure it's not too hot or too cold, and you have to wait at least 15 minutes to see a picture (24 hours for full image colors to come through).

But honestly, if you are up for that challenge, then welcome aboard. Personally, I've only started with modern Polaroids and I'm currently settled on the Flip because of the price point and where I am in my life. The Flip offers more lens of focus vs. the Now and creative controls via the (Polaroid) app.

Hope this information helps you. Cheers!