Most people probably expect the Lockheed-Martin proposal to win - due to the more conventional layout and LM's Raptor experience.
Personally, I reckon the winner is going to be harder to pick than a broken nose...
I don't know what is best for the RAF, but from what little I can glean from the two proposals, the Boeing variant looks to be a safer bet - using a basic "Harrier" thrust-vectoring system for STOVL has to be simpler than the LM lift-fan system with its myriad of additional sub-systems and unfielded technology.
Anyone else for Boeing versus Lockheed-Martin argument??
