The pros? Easy to use, lots of eye candy to choose from and works nicely with Keynote. The cons? Limited and in some cases no support for older Macs due to video card requirements. Check OmniGroup's requirements page to see if your Mac supports it. You'll need Mac OS X 10.4.6 and a Core Image capable video card. Also, too many not-very-useful styles. Check out the full review for more details.