There are some significant differences between each of them:
• The Cardini Change
, whilst visually pleasing, has terrible angle issues from most other than a birds' eye view. This is partly down to the grip of the card during the change; those who are familiar with the "Cardini Cut" should have an idea of the grips - because of this, the change is said to be fairly impractical.
• The Ego Change
, devised by Daniel Garcia was published first in his Lecture notes, Blueprints
(2004) and later published on his DVD, The Daniel Garcia Project, Volume 1
(2005). This is the method of the change that most people use nowadays; including Dan Buck who unfortunately caused confusion by miscrediting it as the Cardini Change on disc one of The Trilogy
(2007), whilst explaining "The Queens".
• The George Pughe Pass
is perhaps the earliest printed proof of a such a mechanic, though not used as a change. It's often referred to as a 'one-card pass' whose roots go back to 1933. It can be found described in a letter to John Hilliard dated January 21st 1933, where it is mentioned that it is ‘a one-card version of the Houdini-Elliot Shift.’ George Pughe apparently used the move to control a selection to the top of the deck, using the second finger as the lever.
Just on a side-note, the first to establish this type of sleight in print was Steranko, whom used his fourth finger to accomplish the move; making it much easier. His “Shadow Steal“ appears on page 22
of Steranko On Cards
(1960). The mechanics of the sleight are also utilized in “The Rooklyn Top Palm“ found on page 161
of Dai Vernon’s Ultimate Secrets of Card Magic
(1967). Ray Kosby also re-invented the move in his youth, and titled it “The Coffin Change“ which can be found on page 45
Hope this clears anything up.