There`s a couple more cams that have sound. Bushnell makes one and so does Spypoint. You can make your own, also.

I researched the Leaf Rivers and I think you`ll be happy with the IR7. The videos looked fairly good. On the other hand, the IR5`s vids looked lousy.

I`m looking forward to seeing some vids. Sound makes them much better. I have a homebrew Jazz DV 150 with sound and I love it. I`m going to be getting a homebrew, DXG later on this year.