Anybody got a better suggestion?
It sorta depends on what you need. Folding utility carts cover a huge range of quality and price.
You mentioned that your old setup didn't last. If you want something really durable, I have some experience with the Kartmaster HD500 from kart-a-bag.com. It's a hand truck that converts to a dolly. It's also collapsible and drops down to a fairly handy bundle. Now, I generally hate collapsible hand trucks, folding hand trucks, and convertible hand trucks. They're nearly always too fussy and too delicate. They wear out way too fast. I've broken more of them than I can remember.
The Kartmaster, though, is in a different league. It will haul 600 pounds, is insanely durable and well designed, and there's a range of potentially useful accessories, including solid tires, a shelving conversion and a flight case. It weighs less than 50 pounds.
If I needed a piece of equipment that was handy and light enough to pack for travel but that would enable me to haul heavy loads over flat pavement and up and down stairs, I'd probably get one. It's ok on dirt, shallow gravel, grass, etc. Like any hand truck, it can bog down in mud and it's a pain to drag through deep gravel.
The cost is around $600 but it's one of those things that makes you glad you have it every time you use it. That said, I use one at work and have never been able to justify the cost for personal use. My personal hand truck is a simple heavy steel model with nothing fancy that cost me, iirc, $85 a couple of decades ago. Now that I'm getting old and slow I just may treat myself to something better and I find myself seriously considering the Kartmaster.
