I have no clue what we are using. We got it from Wall Mart a few years ago. It plays DVD and Blue-Ray. It also has internet access. It's worked fine for us for at least a couple good years now. Then we got a new television for the camper living room last year and it came internet ready. So, we don't need to feed Netflex or YouTube videos through the player any more.
You can spend a fortune on a player and it may die the first time you use it. You may get an inexpensive one and it may play for years. Just go to Wall Mart or Best Buy and look for something that meets your needs. Maybe I'm a bit different here, but when it comes to my camper ... price is irrelevant, it's all about functionality.