We have one of these. I'd always liked them and thought they were a nice idea. William loves it too.

We bought it when he was about three months old and he used to go right off to sleep with it. He now sits up and starts batting the starfish and rolling the crab around to amuse himself, then switches the music on, falls face down and goes straight to sleep. It's hilarious.

I also like the Flutterbye Birdies one ... it was hard deciding between the two as they both have nice features. FP now have a rainforest soother (saw it in a catalogue the other day). Luckily that didn't come out last year or I would never have been able to choose.