I use imediashare premium from the apple app store. It allows me to stream my downloaded videos from bigU after copying it to photo apps(as bigu gives you that option), to my ps3 or other wifi detecting devices. Its like $5 and they even have a free version of the app with a free trial so you can test it out on your devices like your ps3, blue ray player ect. It's not FREE(since thats the big concern here)it's a one time payment though like bigU, and also like bigu it's highly affordable and pays for itself with the first if not second movie.
I had both bigu and unlimvideos, it's all about preference. I prefer to download
because I like to keep many of the videos on my Ps3 and hard drive for my movie collection. Me and my family are big on movie nights, so it's just easier for access and viewing for everybody. We can all look down the list of movies predownloaded and decide on one. So for me I find it more of a convenience thing and it's already payed for so I might as well use it especially since I find "I" have already gotten good use out of it but that's just me.