I know you said one .... but I'd say CWU and Shellendrak. Both are great sets, but these are two sets that (despite the disparity in release dates) work really, really well together. I think you'll find yourself uses pieces from both with each other in ways that you might not think of if you purchased only one or the other.

i think im gonna get CWU(i'll get the other 2 at some point) i like the lean-to thing in the "all the bits" piccy

although, i'm not entirely sure my fantasy city needs more walls, i'm already using VW and both interior works to make the walls(with 1/2", 1" through 7" walls i have a lot to work with, and that's not even considering the gable ends, doors, windows or roofs)


my avatar says pro kitbasher, i think it should say insane beyond comprehension kitbasher