Hi there! I am about to place an order for a pair of Role Club engineer boots. I have a few questions, and am hoping folks on here can help me. 1. Does anyone own RC boots in both the 1940 and 2307 lasts. I am wondering what you think of the lasts. I am having a hard time deciding between the two. 2. I don't know if I should go with a structured toe or a soft toe, and honestly don't even know what the difference is. 3. I want a pair of black engineer boots. He offers CXL leather, super horsehide, and something called Hand Finished Black Horsehide. Does anyone know the differences between these leathers? 4. What is an edge finish? The choices are dark brown, medium brown, natural and black. But I have no idea what this is. 5. Any recommendations on heel height? Standard is 1 7/8 inches and lower is 1 1/2 inches. It's a small difference, but I'm curious what the difference may be to the wearer. Thanks so much!