I got these, but mine are 4-steppers.
http://www.doggysteps.com/
I don't think you need anything fancy. Lighter and easier to move is better. We got one for the front room and ended up getting another set for the bedroom.
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Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP).
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