PSP - Emulators and Downgraders

What's the best emulator on PSP so far? For me I'd have to say it's PSP Genesis by Sougen. This weekend I had some spare time while not house hunting to get a few hours of 'Phantasy Star' in. And I enjoyed every second of it. The game speed and music seemed right on. If you've got a PSP (1.0 or 1.5) check it out over at DCEmu ( http://tinyurl.com/9emot ). After Genesis I'd have to go with the PSPWiki ( http://psp.holybell.to/ ) release of MAME 96. After all I am a Namco arcade freak. I'm going to try to fit in time to try some more emulators of the next couple of days and we'll see if any others are worthy of staying on the memory card. And last but not least... PSP Downgraders. A lot of you have been finding your way here via Google during your search for the holy grail that is the PSP firmware downgrader. It does not exist yet. And when it does I'm sure you see it posted every blog under the 'interweb'. But it's probably going to be a little while before one is released...