I guess you are not in Germany, but the following popped just up on "ebay small deals" for 700 EUR, which would be a perfect fit for your needs.
Cisco SG550XG-8F8T-K9 16-Port 10Gig
8 X10G BaseT and 8 SFP+
Cisco 550X Series Stackable Managed Switches Data Sheet
Pro is RIP v2...
I have the previous version and without POE for exactly the same needs > Cisco SG350X-24. SFP+ goes to a Truenas (Intel C3758) server (FS DAC), while 2x copper 10GbE to my workstation & Proxmox server (Xeon-D 1528). The remaining SFP+ I might use for connecting a cisco 2960s-24-TD-L...
Long time lurker, first time poster :).
I am also planning to exchange my core switch (SG300) as I have invested into a X10SDV-6C+-TLN4F and would like to tinker with 10G. After doing significant amount of research I am considering to pull the trigger on a SG350X-24 (24 GE + 2 10GE...