yep i have tried synce, about 8 months - 1 year ago but couldn't get it to work right, it would only sync all the new entries over none of the new.
I posted on here and on the ubuntu sites but the teckys that was answering the posts what unable to help me more to get it to sync right.
In the end i installed Virtual Box and used Windows XP and ActiveSync 4.5 to get it to work, Now that ubuntu have changed the way USB is handled in 7.10 i am unable to get this to work now.
so it looks like im back to square one, unless the Synce project has got better or should i say with the many many disto's out there working with the many many Windows CE , Pocket PC, and all the rest of the stuff people have.
I am in no way blaming any body in this or any of the hard work people and the many project teams what do work hard to give us "users" GPL software.