#56: I like the added 3d feel. I prefer the circle of
#51 over square. Can you make bolt a little thinker. Like the size of arrow head in
#51. Like how bolt starts thinker and narrows as it gets higher. I like the cleaner, simpler house logo in
#51 where it avoids fine lines and fine details.
Variation idea: House looks like an arrow. Make door of house an arrow within the arrow, replacing bolt.
Color: Like the black. Can I see some alternatives the the current shade of blue? (Red, green, gold royal blue)