Best ebook reader?

I recently upgrade dot a iPhone 14 Pro Max and been suing Google Play books as I like to upload my own epubs. I tried the default books app but lack of customization and lack of easy bookmarking led me to look elsewhere. Used to Marvin so looked at it but Marvin 3 link tells me "not available in my country". Tried BookFusion and while not bad, paying to access offline files in a no go for me.

Right now leaning toward Aldiko Next app but didn't know if there were any better ones out there? Don't mind paying but not a subscription for offline files.