I have two sections of garden with a hand cut edge. I love the look. But it is high maintenance!
When I moved to this house there was mostly dark brown aluminum edging. It works pretty good. As an added bonus there were several sections left in the shed. I quickly put them to use.
When I made my new bed this year I decided to purchase more aluminum edging. Wow! Expensive. But the design was improved. The sections slid together tightly via a tiny almost hidden channel. The stakes also now had a bend at the top which made them easy to drive in and best of all no more screws were needed to secure them to the edging.