I've express my opinion about Sankey times ago... but again I want to say something, in a schematic way
1. I think Sankey isn't entertaining. He tries, but instead he result mad, crazy. Sometimes he get the people embarrassed. (I saw The Best of Jay Sankey). Do you want to see someone really entertaining ? Try Bill Malone.
2. I think Sankey haven't a great skill. He do nice magic, but often he uses basic and simple moves (I speak about cards)
3. I really think Sankey is "milked" by Penguin Magic... I hate his release of a new DVD every two weeks. One thought: I really hate his (maybe) new DVD "Sankey's Greatest Hits". How could a magician release a DVD called "Greatest Hits" !?!?!. Does the magic world are like the music or film industry ????
4. Speaking about cards, most of his effects require preparation. You can't do those effect in a real act... I mean without changing decks or vanishing gimmicked cards.
But despite all, I think Sankey made a lot of great tricks, and I'm sure his is a nice guy.