Synology DS423+ or a DS920+

[Enquiries]

Hi Guys, I really enjoy your reviews, so much so that I'm a little confused with which replacement NAS to purchase.
I currently have a DS412+ which is getting close to its use by date but still functioning. I have 3 Synology HAt5300 12tb disks on volume 1 and 1x Seagate 4TB for Volume 2.
I don't think I need to use an expansion unit in the future, as I have only used 9TB out of the 21 available on Volume 1.
Would you go for the 423+ or the 920+ (I can get one)
I am leaning towards the 423+ and using one or 2 of the NVMe slots and adding the 4GB of RAM.
Or should I get the 920+ and go up to 8GB RAM (is 2GB RAM that much different) and using the NVME slots as well. Or would the NVMe cards be an over kill?
Or should I just wait until another version comes out with all the bells and whistles later. I primarily use the NAS for PLEX and storing documents and family photos.
I don't think the 1GBE Port is a deal breaker as I only have a 1GBE Zytel GS1100-24E switch. Thanks in Advance.

[ed]

Hey there! Thanks for dropping by and sharing your thoughts with us. It's great to hear you're a fan of our reviews! Now, regarding your dilemma between the DS423+ and DS920+, it's worth noting that they share quite a similar hardware foundation. However, the DS920+ edges ahead with its 10GbE upgrade slot and expansion port. If you foresee the need for these features in the future, the DS920+ would be a wise choice. On the other hand, if these specific features aren't on your radar, the DS423+ is a robust option, offering solid performance. Feel free to explore our NAS Finder tool https://nascompares.com/nas-builder/