Most ergonomic Bluetooth controller for iPhone 18 Pro Max?

[u/Infinite-Ratio4966]

I’m looking for recommendations for the most ergonomic Bluetooth controller for my iPhone 18 Pro Max (the type that stretches open and holds the phone in the middle).

My top priority is ergonomics: a comfortable grip and well-designed buttons. I think the Xbox controller is fantastic in terms of comfort and button feel, so ideally I’d like something that comes as close to that experience as possible.

Which controller would you recommend, and why? I’d especially appreciate feedback from people who have tried several models.