3D Glasses Quality/Performance/Price?

[rgrudinski]

I just recently bought my first 3D Blu-Ray (The Avengers) because it was the same price as the regular one, so I said "why not?" Now, I have a 55'' Panasonic 3D Capable TV as well as a PS3 for my BD player.... I am wondering what people would recommend for glasses for a VERY casual 3D viewer (I'll probably watch Avengers 3D ONCE with my fiance, and then probably not again for a LONG time, if at all.) As for other 3D movies, I MAY get them in the future, but not certain...

Now, I've seen amazon's listings for 3D glasses for a Panasonic TV, and there are some as cheap as $18 and some as expensive as $100... I would MUCH rather get the cheap ones because of the infrequency of use, however, If the quality is absolute crap, I'd rather not, and opt for slightly more expensive ones so that at least I can enjoy the few 3D movies I DO watch to the fullest of their capabilities.

Please help a novice with some quick info. Thanks in advance!