If you don’t mind it being completely Chinese based, Beelink with their new Intel 12th gen mini PC were my upgrade from the last Shuttle device I’ve used.
Dual Intel 2.5G NIC plenty of USB and an extremely efficient Intel Alder Lake-N100 with a great price to performance closed the deal for me.
EQ12-N100 is what i went for, to be exact, there are more powerful options too, if needed.