I used to be a big proponent of predator camo. I still think it works if your in the right enviroment. I aggree with the blob effect of realtree, heck you may as well wear gray coveralls. Mossy oak isn't quite as bad but is still on the dark side.
Now that I think of it I had a buddy who wore the stuff, he said it works best at 20 or more yards. I may try some out this year the only problem I have is I spent $300 on a 4 in one mossy oak parka so unless it will fit over it my camo will stay Mossy oak at least in the cold.
I looking closely at NATGEAR mykey mentioned. It looks like some good stuff.
The buddy of mine who wore ASAT claimed to have guys stand next to him and never know he was there so maybe the stuff does work.