Incredible to catch these two brand new Ferraris on the streets of London after their unveil at HR Owen Ferrari Mayfair. The F8 Tributo is the long-awaited replacement to the 488 GTB and uses the 710 bhp turbocharged V8 from the 488 Pista, whilst the SF90 Stradale is a 1000 hp 'hypercar' with savage performance, yet only costs around £400,000- a relative bargain. Which would you take?