Paid a guy $30 to take it to 3.71 M33-2.
And I'm mightily impressed, I wish I'd done this a year ago. I'm playing Kula World, Ridge Racer, Syphon Filter, Driver 2, Crash Bandicoot 3, Duke Nukem Time to Kill, Gran Turismo (!) and a bunch of others.
It's stable and works just like the machine I had before I got it modded.
I found a bunch of converted PS1 games in the usual places, and thanks to my 4gb card I can fit heaps of them on (esp' if they've been well squashed).
Great great stuff, I recommend this to anyone yet to take the plunge.
Just do what I did and get an expert to do it for you.
Disclaimer: it's not till you play PS1 games that you realise how difficult it is to hit diagonals on the PSP pad. If you're a fighter fan, forget it.