Just my opinion...
**Newbie users, Stay away from newer versions of pdaxrom with 2.6 kernel and UBOOT**
UBOOT replaces the "Emergency" menu and thus makes it more difficult to return your Zaurus to it's "original" state.
I still consider myself a newbie, and I have had 2 Zaurii, (one for a year and ¼, and the other for 4 months)
My second Zaurus is about 4 months old, but "returning" to a Sharp based ROM still requires me to re-format my HDD and place the correct files on the HDD accordingly.
I am using pdaxii13, which is similar to pdaxrom beta 3. (See my signature)
I recommend any newbies, especially new users with their first Zaurus, to flash pdaxrom beta 3, or pdaxii13, (for C1000, C3000, C3100, & C3200).
For an older model, such as a C700, C750, & C860, use pdaxrom beta 1 or pdaxii13. (do a lot of reading of these pdaxrom subforums if using pdaxii13 on these older models).
Also, anyone with their first Zaurus should read and re-read as many threads in the pdaxrom subforum as possible before switching to pdaxrom from your original Sharp ROM, or even Cacko ROM