I played a game yesterday with my Blood Angels and tried out a bunch of infantry which is pretty contrary to my usual playstyle. Anyway I was inspired to make a sanguinary guard model with a jump pack and sat down, built and painted him in 2 evenings. I usually paint in batches but it was very refreshing to just paint a single model and watch it come together so quickly. A friend of mine ONLY paints this way even when doing squads and I can see the appeal. I'm still going to do batch painting for the speed but it was a nice change.