I like the concept of sign posts for my Sign Business. Of your various versions I like the sign post in entry #23 best. I like color scheme and font sizes of entry #23 as well.
I also like the idea of creating a symbol for the business name as you did in entry #21. But I guess when you have that symbol, it makes it difficult to "jazz up" the business name (meaning it has to be left kind of plain). Welcome your thoughts on my observation