If money was no object then I'd take the Alfred Helwig Tourbillon 2 - magnificant in the pictures - but even better in the flesh. I wouldn't change it at all (except to bring the price within my budget).

My other choice is the one I bought - the Perpetual Navigator - which combined the wonderful modern approach to a perpetual with windows rather than dials - with the wonderful distinctive look of the Navigator.
I would make a few small changes to this - bring the upper windows a little closer in - so that then don't eat the arabics - and change the fonts so that the small windows and the panorama date better match. I'd also change the background of the moon phase to black.