1. Material:
- Copper Gutters: These are made of copper, a durable metal known for its high electrical and thermal conductivity, making it suitable for various applications beyond gutters.
- Aluminum Gutters: These are made of aluminum, a lightweight and corrosion-resistant metal. While aluminum also has good electrical conductivity, it's not as efficient as copper in this aspect.

2. Weight and ease of handling:
- Copper Gutters: These are heavier than aluminum gutters, which can make installation more challenging and require sturdier supports to bear the weight.
- Aluminum Gutters: Being lighter, they're easier to handle and install, potentially reducing labor costs and making transportation and assembly more manageable.

3. Cost:
- Copper Gutters: More expensive due to the cost of the material and manufacturing process.
- Aluminum Gutters: Generally, more affordable than copper gutters, making them a popular option for many projects.

4. Durability:
- Copper Gutters: Highly durable with a long lifespan, often surpassing aluminum gutters in terms of corrosion resistance and structural stability.
- Aluminum Gutters: Also, durable and resistant to corrosion but may be more prone to physical damage due to their lightweight nature compared to copper.

5. Appearance:
- Copper Gutters: Have a distinctive and sophisticated appearance, with a natural patina that develops over time, giving them a characteristic look.
- Aluminum Gutters: Have a more common appearance and can be painted to match a building's aesthetics but lack the same natural charm as copper gutters.