Old thread I know but thought I'd add in here. I actually think gaffs are great depending on if you use the right ones within a given deck that suits you. I have a few bicycle gaff decks form ellusionist and there are just some cards in them that I think are ridiculous so I would never use them. However, if you are using a deck that isn't bicycle, from my experience, people will automatically assume it's a trick deck. So to me all these Artisan, ghost, black decks, and all the dan and dave decks are more suited for collecting than serious performing. However, I have performed with ellusionist and DND decks with out any gaffs and I found the performances went over well. If you use gaffs within those produced decks then it's very suspect to the audience.