Unfortunately there is no such thing as a good light pot.
What you want is:
- Thick materiel in both the walls and bottom. This ensures even distribution of heat.
- For general purpose use you probably want some form of sandwich, with different materials providing different properties.
- Metal handles - avoid any so-called "oven safe" plastics as they never are and you do want pots and pans you can transfer from cook top to the oven.
- Stainless Steel is the most practical interior coating, but it is an uneven distrubutor of heat, so you don't want solid SS.
- I like glass lids the best as they allow you to monitor the cooking without removing the lid.
- Cast Iron is the best at maintaining heat, copper is best for adjusting heat, but both require a significant amount of maintenance and care.
If money was no object I would have for home use:
- Copper clad with Stainless steel lining and glass lids for half a dozen different pots and one sautepan.
- Cast Iron dutch oven, skillets, saucepans and a small saucepan.