Contacts backup programs

[bluruld]

With Rhodium HSPL out for GSM and hopefully soon CDMA we will all be flashing roms like crazy.

I searched and found these contacts backup programs:

1. www.dashwire.com (Free auto back-ups to their servers)
2. www.dotfred.net (Free PIM backup)
3. www.nuevasync.com/ (Free auto sync with google)
4. www.spbsoftwarehouse.com/pocketpc-software/backup/ (Spb backup costs $25)
5. www.spritesoftware.com/products/sprite-backup/full-edition (Sprite backup costs $30)


What program(s) would you rom flashing nuts suggest to us future rom flashing nuts?
Personally I am looking for a free very simplistic fast option to back-up contacts...flash new rom...restore contacts.