Biggest suitcase to fit in a V8 Vantage boot?

[Lucozade]

It's an ackward shape so I'm trying to figure out what is the biggest suitcase that will fit in the boot. I'm sure a few of us have tried and failed with different sizes.

[Zod]

Squashy luggage is really the only answer. Connolly bags are fantastic (if expensive).

[Mark2008]

Coupe or Roadster? I know i can't fit much at all in the boot of my roadster.