Just purchased a 47 inch Vizio 3D Theatre Tv that uses the passive glasses and I am quite happy with the 3D quality of the 3D. This Tv will also suppourt side by side,up and down, and sensio 3D.I purchased the TV at walmart for $868.
If you need some extra glasses for you Visio, just go out to ebay and look for the RealD glasses that you use in the theaters. You can get 10 glasses for under $20 that are new.
I have a friend who is a theatre manager and said he can give me all the glasses i want from the disposable box and they are only used once.I would ask a manager if you could have some of the used ones.
I saw the Vizio's around here. For me, I really didn't care for them. My dad saw a difference between the Vizio and the Samasung next to it, also. Still looking. Waiting to see what the Sony looks like.