As far as best fw, its all a matter of preference...6.61 PRO C2 has a stable release now and a 6.61 downgrader is available too...since u have a 2000, I would check to see what motherboard u have to see if it supports cipl...that would be the only thing that differs in choosing a fw...I made a global post on how to choose the best fw for your PSP with an easy to follow chart, and I'll make a new announcement on the 6.61 DL links