ASK NC

Trying to figure out best NAS for my use. I just had an old Buffalo Linkstation die on me and need to replace. Mostly use for photos, videos (both home video and movies converted from DVD and Bluray), and music storage. Also backup home documents, receipts, etc. Looking for probably two bay but open to four bay. Don't need more than 10tb but would like to use Raid 1 so I have backup.
I've been comparing Synology DS723+, Asustor Lockerstor2 Gen2 AS6702T and a couple of others. All I am really doing is confusing myself. I have 1200 Mbps Internet from Xfinity with an ASUS ZenWIFI AX Mesh system. What route would work best for this? Seeing these units go in the $450 range without disks is well within my price range. Also what disks would you recommend?
Thanks in advance for any advice you ma be able to offer.

Celeron processor in the Synology DS220+ and DS720+ is good for multimedia applications because it has enough power to handle video and photo transcoding, which can be resource-intensive. Both models also have hardware acceleration support for video transcoding, which helps to improve performance and reduce CPU usage.

Additionally, the Synology DSM operating system has built-in multimedia applications such as Video Station, Photo Station, and Audio Station, which make it easy to manage and stream your media files. You can also use third-party applications such as Plex and Emby if you prefer.

Overall, the Synology DS220+ and DS720+ are great choices for a multimedia-focused NAS, as they offer a good balance of performance, features, and affordability.