Deck switching it a great skill to develop for any card magician. If you’re looking for a good general resource that teaches a lot of deck switches, The Art of Switching Decks by Roberto Giobbi is a good reference.
http://www.penguinmagic.com/p/S15258
It covers over 50 different deck switches, has an easy index to find the kind of switch you need, and includes a DVD that includes a video where Roberto demonstrates 8 of his favorite switches.
There are also a few great gimmicked options available;
The Cooler by Christian Engblom:
http://www.penguinmagic.com/p/2810
This is a very easy switch if you work off a table.
Cold Case by Gregory Wilson:
http://www.penguinmagic.com/p/6604
This is a great in-the-hands deck switch, which is also incredibly easy to do. It’s totally customizable for any deck you may use.
Vodka by Kuniharu Kubo:
http://www.penguinmagic.com/p/S17997
Vodka is a great option for in-the-hands or tabled work. It’s a little more difficult than the other options and it is not as easily customizable to other deck designs as most others.
Flash Deck 2:
http://www.penguinmagic.com/p/S19275
Flash Deck 2 is another good option for in-the-hands deck switching. It can be fragile but it is possible to repair and customize.
