I've got an old sleepover elegance on the big wheeled bouncy chassis. I bought it very cheaply in a charity shop because I needed another buggy for off roading ( my main buggy is a silver cross pop absolutely brilliant).
It's well built, copes with any terrain, seems comfortable for DS and easy to push. Pushchair part can face forward or backwards and boy can you load it with shopping without compromising stability or fearing it will break. I've not used it as a pram as I had a big old fashioned silver cross pram. If I have another baby I think the pram part would be really good.
On the downside you need a big car, I can get it in my small car if I take the wheels off the chassis and put the seat bit on the backseat ( strapped in). I also have use of a Land Rover, huge load space, but it's heavy to lift in and out and it will fit without folding in the Land Rover. It's as heavy and bulky as the old fashioned silver cross pram I used when DS was a baby.
It's good, not sure if it's worth the full price. Its great if you don't need to put it in a car and off road it's better than many off road buggies.