The 3rd one is my favourite - what font is it? However, I do also like the way the UP is superscripted in the first two, and they'll fit better on the website.
Which one do you prefer?
I'm glad you like them. I also prefer the third one, it looks more clever. The name is formed by uppercase letters of the Quicksand Book font, which is free. I had modified the dash so it's wider, but I've included the name as a separate file in the package below.
I had thought of a variation on the third one that gives it a square frame, so it should be good for icons as well:
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Package: [attachment=16540:C-UP Orange Logo (R1).zip]
Regards, good week.