What's the Quality of Unihertz?

I've been looking at the Jelly Star as it checks a number of boxes. Unfortunately small phones have been more and more difficult to find. I have only known two people that had them. One had all kinds of issues (they had the atom), the other had the Atom L and loved it. Anyone have experience with Unihertz and more specifically the Jelly Star. I list my current pros/ cons as I see them.

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Features I like:

-Dual Sim

-3.5 mm jack

-good Camera

-large battery

-MicroSD for increased storage

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Dislikes:

-Thickness

- says max expandable memory is only 256 gb with MicroSD (I'd at least 512 gb)

-SAR Rating is a little high (Higher than all Unihertz models, although pretty average compared to modern phones)

-inability to import itunes over from Iphone 13 Mini.