I have the RV-Co's 5 step version for the past couple of months. I am quite pleased with them as they are fairly light and yet sturdy. They are easy to set up and take down and folds up compact enough not to take too much room in the basement storage. Adds a much needed level of safety with the hand rail with solid and consistent height steps for my DW to get in and out of the FW, as she has some mobility challenges.
The only issue I had was the steps kept sliding forward on the top step every time you stepped on them. I fixed it by adding a short piece of aluminum angle so to bracket the top step front and back.
Overall, very happy with them, but I think the price is a bit too high, but what RV product isn't these days.
2015 Chevy 3500HD Silverado High Country CC DRW LB 4x4 Duramax
2015 Heartland Bighorn 3585RL