Buying first android

Buying my first Android. Switching over from iPhone.

Country: United States

Carrier: Going to buy unlocked but on AT&T

Price: Any budget. Looking for the best I can get even if it means waiting for a device to release later this year.

Size Preference: Any size.

What will it be used for: Mostly it will be used for media and general use. I run a NAS and Plex server, so I'd like something that handles colors well at least.

Preferred brands: Google, Samsung, OnePlus

Other: N/A