Wii is the easiest system to mod
Cheap too. No mod chip needed to play legal backups. You can use a hard drive, but it might not be compatible with the Wii. I have a new drive coming, I’ll format it as FAT32, so I can backup the games I got at GameStop. The ModMii guide said backing up to NTFS is unstable. But with my luck the drive won’t be compatible with the Wii.