What are your requirements? I've also been looking at getting a pocket projector for doing small group presentations with an iPad. I'm looking for a self-contained, cordless solution that is as bright as possible. I will be doing presentation in small groups (10 people max) in areas that can be darkened enough to pull a 50"+ screen.
I've checked out the Wowwee unit and it's not going to be bright enough for what I'm looking to do, but I've settled on either the AAXA M1+ and one of the newer Optoma units. I'm leaning towards the AAXA due to the higher brightness and the more robust media player (reviews on the Optoma units have stated their onboard media player has trouble with common file formats).
