A long-handled shovel is a great improvement for gardeners and will keep your back in better shape.
Besides that they are better for your back they also will make digging lighter and not so have because of the extra length of the handle.
It is actually strange that they have not been available much sooner for all gardeners
There are so many types of shovels and spades that I can only give a few ideas and you can then find out more about them.
All the ones I have found are of great quality and from well-known garden tool companies.