I've been using BirdieSync for the last 18 months or so and i have to say it is a very good piece of software at an amazing price. However, I have now upgraded my phone and moved to a Google G1 and no longer require ActiveSync as I'm using Zindus to push to google.
I would just like to say thanks to Birdy for his efforts in helping out the Thunderbird users out there sync with Windows Mobile. If I move back to a Windows Mobile device in the future I will definitely use this product again.
Thanks Birdie.
D Harry