I have been getting back into playing GBA games and was wondering if the Retron 5 would be a good choice for streaming physical GBA titles? I also know that the GBA consolizer is another option, but I am on a budget.
I use Game Boy Interface, which is a free, homebrew Game Boy Player software that works much better than the official disk. Either one can be booted easily these days via a memory card hack. You just need one of a few specific games (I use Melee) and access to a modded Wii with GameCube support to install the hacked save file.Game Boy Player is another option to use official hardware, tho you may need some kind of video adapter, and the legit discs for the Player don't come cheap - hacking the GameCube to play a backup might be cheaper.