Time for a new Stretcher. Recommendations??

I've been camping on and off for at least 30 years on some old vinyl stretchers my Dad bought many, well at least more than 30, years ago. There's still nothing wrong with them, but there now is with my knees and back.

So I'm after any recommendations for new stretchers that sit 400-500 mm off the ground and, well, let's just say that maybe ones rated at 100KG capacity aren't quite good enough.

Also I'm not looking at ones with bars at the ends, coz I'm sure I'd end up with my skull on one and ankles on the other every night I got into it.

Thanks in advance.