I like the first $500 best, by a long shot. It's very nice. HHR is a cool mold, but certainly mold choice is very personal so you should go with what you like best.
Can you post a bigger photo of the inlay? Hard to see all the details in the small pic. But it does look pretty cool. What's the significance of Block 25?
Edit: I think I just figured out that the part of the inlay I couldn't see is just a watermark, and not actually part of the design. Have you considered color matching the denomination with one of the colors on each chip?