[Kombisaurus]

Sorry to ramble on some more about business cards.... but...
As well as making up new cards for my photography work, I need to make up some new cards for my "real" job as a Software Engineer.

I will be using Moo for these cards too, so I can have a few different designs (although there is no point having loads of different ones).
Here are three designs I've come up with so far for the "Image Side". Because I build Software Applications, I thought I'd take the "build" metaphor and run with it.



For the "Details Side" of the card, Moo only allows for a single design for every card. I'm really not sure about this. Part of me wants to use something very plain, but another part of me wants to use something like either of the following computer-themed designs:



What do you guys think? Remembering that these are for quite a different audience and offering a different service.. Do you think these look any good? Do they seem professional? Are they trying a bit too hard? Will they be effective?
Thanks for looking.