Rob's Room: Which is your favorite Star Trek concept ship?

Which is your favorite Star Trek concept ship? (via Starfleet Ships)

• 1964 Concept that became the Ringship Enterpise (XCV-330) 
• 1964 Concept that became the Daedalus Class 
• Phase II Concept Enterprise 
• Upside Down Miranda Class 
• Nilo Rodis Excelsior Prototypes I-III 
• Andrew Probert Enterprise-C/D concept 
• Defiant Concept 
• Voyager but closer to a runabout