I installed Nuevasync today. Lots of error messages even after the initial sync. Server address not found, communication error etc. I'm running the five day pro trial.

A bigger problem though is that contacts are supposed to be merged, so I have one of each contact that includes im, phone, email and other fields. Merging contacts breaks horribly for me using Nuevasync and all contacts appear to be unmerged after sync. I turned off contact syncing alltogether and use it only for calendars. Nice effort though.