If you are considering the vinyl plank flooring, I cannot say enough good about it.
This stuff is amazing. Waterproof, durable and it looks brand new and I have had it down now for at least 9 months. It looks just like it did the day I put it down.
It cleans very easy and my slide comes in right on top the floor and no scratches or blemishes. Amazing. It is because the planks are so thin that they do not interfere with the slide or really any part of the inside of the 5th wheel. I strongly recommend that when you remove your old floor coverings that you make sure the sub floor is clean and free of any staples or nails. You would hate to get this floor down and have a nub show up later.
If you should ever have to replace a plank due to damage or a bad scrape all you need is a hand held hair dryer and the floor will soften right up and the adhesive will release and come up so you can replace it. It really is quite care free and it makes the inside look like a million bucks.