The remote that came with my Samsung TV stopped working and I am looking for a replacement. It is model # BN59-00849A. It is an RF remote, which I prefer. When looking at replacements, I saw BN59-00850A and BN59-00851A. These look very similar to the remote I have, except they have a button to turn off the backlight. This would be nice since the BN59-00849A would go through batteries pretty quickly, probably due to the sensitive backlight. I'm not certain, but based on some pictures I have been able to find, the BN59-00850A and BN59-00851A appear to be IR remotes. Can anyone confirm this?

Assuming I want to stick with an RF remote, is the BN59-00849A my only option?