I have the 400 model. It has worked fine for me thus far.
A while back I posted a thread about it's purchase. When I took the first one home, it didn't work. Back to the store for number 2, and made sure to have the clerk open it and try it. Same deal, it didn't work. I ended up with the display model which worked.
I have a WGI cam also, and older LED flash model. It was a purchase right before xmas, was on clearence for 60 bucks. I've had it on a tree since and so far so good, pics pretty good and for the money I paid it's been fine.