Logo concepts.

This is a logo design in progress I am designing for Huber Farm Equipment.
One of these may, or may not be the final selection for them to use. I'll post the final selection later.
The basis of the design is to remain primarily typographical. As this is a visible trend within the agricultural equipment industry. Another reason I am staying typographical, or making more of a word-mark, is because of the limited geographical range of the company. They sell and service the equipment, but they don't make the equipment.
My choice for the logo would be the top set, top left. we'll see what they pick soon.