I really enjoy
Lee Valley's Garden Tools.
About 20 years ago we bought a little hand trowel from them. It had a lifetime guarantee not to bend. About a year later, a gravel truck (full of gravely) drove over it and it bent. Clearly our fault, but they replaced it anyway. Funny, I don't see it in the catalogue anymore.
They are also the only place that
sell a fork and spade set that is long
enough not to hurt my back. I can simply put it in the soil, bend at the knees and use it as a lever, then one hand as a fulcrum, one hand on the end of the handle, and unbend my knees. Minimal back involvement means I can dig for an hour or more without needing a rest. However, they are hugely heavy for most people to use, especially
city people who wish to help out on the farm.