spot on DCrux - i totally agree with you on that.
AT the end of the day its all about personal preference as well..whatever makes your visitor more interested in you. One thing in common between all 3 sites is that all of them look very professional and easy to use - which is great news for anyone landing on them. Personally i would choose this one:
http://www.tradescanners.com/ i like the soft colours:)
sorry my answer wont tell you much about sales.. what I found has increased our sales :
- good prices
- good website usability with call to action points.
Good luck
T