As bahumatlord has said E3 flasher is better option for more functionality. But it all comes down to what you want and can afford!
If you plan on flashing yourself I suggest you read and read again about what you need and steps needed to do it! Just to be safe
Playstation 3 (PS3) E3 flasher CFW Downgrade Service (Latest Official Firmware to 3.55/Latest Custom Firmware) NOR Flash Only (UK)