Compare the Radical RXC 3.5 V6 Twin Turbo - [2014] vs Aston-Martin DBS 5.2 V12 Twin Turbo Superleggera - [2018]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Radical RXC 3.5 V6 Twin Turbo or the Aston-Martin DBS 5.2 V12 Twin Turbo Superleggera. We'll leave it up to you to decide which is your favourite.