Extra VED is peanuts in the grand scheme of things, it's only an extra pint of beer a week or three tanks of fuel over a year.
GT4 still has the worse interior, I cannot fathom why the market rates it so highly unless you love the yellow. Which I do, but I still don't want the naff interior!
Revup for me as a minimum, 313 is an absolute no-brainer if you can stretch to it. Even better, a 313 with no sat-nav as it's not very good, just fit your own system afterwards