I did a dual-boot Win10 and Win8.1 Pro and both on SSDs in the PC. I took a Win7 and upgraded to Win10, then added Win 8.1 Pro so UEFI was easier.
Anyway, I lean more toward Win 8.1 and here's why:
1. I have an HTPC with minimal data on it and 8.1's "metro" start screen isn't half bad on my...