New hardware: EFI vs BIOS

Question

BIOS

I select a configuration for a new system - and I was faced with a large selection of both one and the other.
EFI seems to be newer, cooler, but I don’t need secure boot (with linux it doesn’t seem to work very well).
Planned OS - Debian, Mint, Win7

Answer 1

What is the question? You can't buy a new motherboard without UEFI, they're all like that now, and Secure Boot is easily disabled.

Answer 2

EFI and only EFI. The main reason is that soon there will be no BIOS at all - it will be attached to the motherboard only by special order, and for embedders as well. Therefore, you should switch to EFI as early as possible so that the transition is not painful. Yes, and bootable hard will need another partition table - GPT (this is part of the EFI specification), so for an accurate transfer of Win7 you will have to dance with a tambourine, you will have to say goodbye to WinXP.
Support in the EFI environment for running 16-bit bootloaders is called CSM, and EFI motherboards will support older BIOS bootloaders for a while. But at some point, the manufacturer may cut out this support, as MSI already did, so your system may suddenly stop booting after the next firmware update. So there is still time to move on.