If you can protect your O-Rings so they become pseudo-permanent effects is the best way to go
Knowing that future versions of the cards will fit in more flavorfully is a bit of a relief so that you can play a more in-flavor version of the card instead of something so jarringly out of context if that bothered you about this products original release
The fallback of forcing your opponent to reveal their hand without paying mana scales up in power based on your competitiveness
However, the foil treatment makes that specific version of the card scarcer and often more valuable
Barret, Avalanche Leader* Much better than Barrett from the main set, Final Fantasy 7 Commander Deck Barrett, Avalanche Leader provides a solid body that creates tokens for your equipment, and provides a limited, but completely free attaching method each turn
Once you put him in a rainbow-color deck, Draco becomes much easier to cast, but to this day, he still one-ups all other creatures when it comes to highest converted mana cost