What about doing a "KAI meets the Gillette Adjustables" weekend?
Saturday's shave shall take place with the Fat Boy. Sunday's shave will be dedicated to the Slim. In case you have access to both razors, use them on the same setting number (or a setting which appears to be equal on these two razors subject to your personal experience).
Who else is going to join in with the Fatboy and/or Slim?
Prepared this weekend's setup!