VS007 v VS023

Hi,
Planning a trip from London to LAX next year. Obviously a choice of 2 flights with Virgin. VS007 and VS023. Looking at the "What Aircraft" section of the site I would recon that VS007 will be a 747-400 and VS023 will be a A340-300.
If I am flying PE, I assume VS007 would be the better option as it has the option of sitting upstairs? If flying economy, what is the better flight, VS007 again as it is more likely to have V:port? What do you seasoned Virgin travelers think??
Any help appreciated
Great website by the way, just found it this week and already helped me a lot.
Grebo:D
Planning a trip from London to LAX next year. Obviously a choice of 2 flights with Virgin. VS007 and VS023. Looking at the "What Aircraft" section of the site I would recon that VS007 will be a 747-400 and VS023 will be a A340-300.
If I am flying PE, I assume VS007 would be the better option as it has the option of sitting upstairs? If flying economy, what is the better flight, VS007 again as it is more likely to have V:port? What do you seasoned Virgin travelers think??
Any help appreciated
Great website by the way, just found it this week and already helped me a lot.
Grebo:D