We have our new server commissioned and running.
We are running SBS2008 which works very nicely. We found that there is a dearth of how to’s out there on the web in relation to a number of specific configuration issues we came across but we seem to have solved most of them now. We did use Philip’s excellent SBS 2008 setup list as a starting point. We also found lots of good helpful stuff on his website. we were both doing similar migrations from SBS 2003. In our case we didn't use any migration tools but manually moved data and mail. I actually copied every users mail out of exchange into a PST file, and then re-imported them into the new box from the PST file. The main reason for this was to avoid bringing over corrupted profiles and other bits and pieces from the old server. The value of this paying off already with quick profile load times and no errors.
Here are some useful SBS2008 articles from Philip:
We are very impressed with this. Big improvement over the beta with much better driver support, more stable and the UI has been changed subtly. The biggest things are probably unseen to most users, but as noted in Philips articles above the connections to sharepoint and the server are much better than Vista.
Some news and links here: