I'm going to say that of the bits in my bits box, about 65% are from BWB orders and the other 35% are left overs from boxed sets.
And the new battleforce bits I got for
free from GW [
see thread].
My 2000pts army is only missing a Dreadnought and Land Speeder Tornado, so all of these bits are relatively useless to me until I get into Apocalypse-sized games.