Yes, he's mentioned one of those in a PM
I can vouch for the Super Talent SSD .. I've got the 16GB version and it works a treat.
I wouldn't say it's hugely quicker than the original but those annoying I/O pauses(where the read/write light is constantly on) are gone
Another option is to fit a Samsung HS06THB 60GB 1.8" PATA (IDE) hard drive .. I know this works too as I have one in my other AA1
instructions here if you're interested:http://tnkgrl.wordpress.com/2008/08/16/modding-the-acer-aspire-one-hard-drive/
If you DO decide to go with an HDD .. go for the Samsung, other people have managed to get the cheaper Toshiba drives to work, but they can be iffy as they use a LIF connector where the cable is thinner
(read the comments on the above link)
Speed wise, there's nothing in it between the Super Talent SSD and the Samsung HS06THB .. obviously the Samsung has more room, but the SSD is more robust and an easier fit as its a direct replacement for the standard SSD.