Configuring UEFI boot mode

I'm going to replace hard disk on my laptop and install Ubuntu Mate on new disk (only one OS). Do I need move to UEFI boot option, or use Legacy BIOS mode? Originally laptop computer come with Ubuntu and legacy BIOS mode. Then propably during Ubuntu updates BIOS was updated for UEFI support. The boot menu picture. Is it better move to UEFI mode or stay with Legacy BIOS mode? Is there advantages to use UEFI boot mode in my case?
Hot to configure /boot when partitioning?