2 years ago I got myself a sl-5500 from ebay. Was happy with it for a month or so until the battery life ended the enjoyment especially with wifi.
but now since hearing about the sl-3xxx releases and seeing that the battery life has been reported as acceptable compared to the SL-5500 Im starting to see enjoyment creap back in.
Now the question, would I really be happy with a SL-3100 after my experience with the sl-5500. I've checked out a sl-6000 in person and was amazed by the vga lcd.
Im assuming on a sl-3100 with wifi the battery should last 3 hours with repeative use.