Mine is jk I did one pure build right before kernel.org got hacked, and I haven't been able to do one since, I keep switching from mirage to backside, mainly because they get updated the most often
Depends on if you want Froyo or Gingerbread first.
There's about a lot of IHO builds (although only 3 have been updated recently) and as for Froyo, the only builds still being updated is Harmonia, and my mod (Harmonious Bumblebee) which is basically Harmonia with a couple addons from Bumblebee and some graphical modifications (but Harmonia is still the chassis of that beast )