A: PSP Go. You can pause the game (sleep mode) instantly. Plus, you can connect a DualShock 3 via Bluetooth to play RE2 on a TV with a real controller.
Copy your EBOOT.PBP file into your newly created Resident Evil 2 folder. The final path should look like: ms0:/PSP/GAME/Resident Evil 2/EBOOT.PBP . psp resident evil 2 eboot install
Connect your PSP to your computer via USB. Open the PSP folder, then the GAME folder. If it doesn't exist, create it. A: PSP Go