You want the latest marshaltown ones, massively better than the first design. Much more comfy and easier to walk on, look like they've got little blue feet on the bottom connected to one short dumpy red spring.
Around 7 years ago I tripped on my stilts, landed on the spot board which was loaded and flipped. Multifinish all over the guys fitted kitchen and fridge, 5 mins later the houseowner walks in. Ooooops! Don't let that put you off, I wouldn't be without them.