After a long time of persuading myself I don't need it, I ordered H12SSL-I for €458. It's definitely most expensive board I ever bought. Hope it serves me well. Thanks a lot everyone here that helped me with my choice
Lovely board, as long as you treat it right with good cooling, good dust filtering, clean stable power.
Obviously a little late, but personally I would have recommended the 'NT' version as it comes with two x8 slimsas ports that expand out for direct passive 4 x U.2/U.3 drives, couple these ports with the most reliable passive slimsas cables for gen 4 drives such as the 'Highpoint' range of slimsas to 2 x 8639, and you have a fantastic server with plenty more room for expansion.
I'm currently on the wall with the new superfast Epyc cpus, just love the idea of having a performance-desktop-like single-thread speed rating mega-core server cpu, but *cough* they're still priced in the thousands and then the board and memory would also probably lead my better-half away from our holy union. If only the pricing was back to 1999 levels lol
ps. I bought the H12SSL-NT back when it first came out for roughly 200 bucks.... Klaus Swarrrb and co really did help their elitists filthy-rich buddies to screw us regular folk over indeed, yup, make 'scarcity' the norm, produce less, ramp up prices to keep the margins as before. Clever barstarrrds. If I could, I'd like to reset them and see how they like it. Oh and I'd also love to scalp the scalpers too who help turn things from bad to terrible.