Okay. I've had my Monster glasses for the last few days. This is just my opinion.
I decided to go ahead and return them. The main reason is that they make a buzzing sound from both arms when 3d is activated. It's not loud, but the sound bothered me since it is right by my ears. It was louder from the arm with the power button. Once I picked up on the frequency, it was hard for me to forget. I forgot about it playing fast videogames and watching movies with above average sound. Once the sound got quiet, I would hear the buzzing and start focusing on that. I'm not sure if it was just my glasses or all Monster glasses. My other 5 Samsung 3d glasses do not make this sound. Again, it isn't loud, but it sounds like a bee buzzing around my head.
The glasses themselves worked well. I didn't think the picture looked that different from the Samsung glasses. Maybe a very slight increase in brightness. I thought the cross talk looked the same on both. I have a pn63c8000 TV, and the cross talk doesn't bother me anyway. Messing around with lens cycle didn't really help. The default was already on full brightness, and changing it make the picture too dark. So the default for me looked the best.
The glasses look huge when you first take them out of the box, like movie theater glasses. The glasses fit more loosely on the head. I thought they were more comfortable than my Samsung glasses when I was wearing contacts, but not as comfortable when I wore my prescription glasses. They felt like they were being pushed off my nose by my other glasses since they don't fit tight on the sides of my head.
The best thing about the glasses is the syncing. Once you have the transmitter set up correctly, you will not lose sync. I was able to see my TV from about 24 feet away and they were still working. I even walking upstairs to the second floor and went into a bedroom. I could tell the glasses were still syncing with the TV since they didn't turn off and were, unfortunately, producing the buzzing sound.
Overall, I would have probably kept the glasses if it wasn't for the buzzing sound. If I find out later no one else has Monster glasses that buzz, I may end up ordering another pair in the future.