The biggest of anything I own, in each category, I call Big Bertha. Sometimes a Big Bertha looses her title to a bigger Bertha. When that happens, the looser does not become Little Bertha, it just goes back to it's former product name. Who said life was fair?
The LP is an exception to the rule in a way. I don't like to call it little, the sound is way too big, so I just call it Phatty.
Current Big Bertha keyboard is a Kurzweil 2500X. Some time ago, I dug out the promotional video-cassette that accompanied the unit. The featured spokesperson is a young, very long haired lad, who happens to be none other than Jordan Rudess