Oh a pressure cooker discussion. Nice!
Damaged rubber gaskets and valves in European style pressure cookers are exactly why I love the elliptic-lid Indian style pressure cookers. There, the gasket is just a large O-ring, pressurized from the steam pressure between lid and pot because the lid is inside the pot when cooking. Also the valve is a simple weight on a pipe – nothing to be damaged there.
I have looked around for the “perfect” Indian style pressure cooker for myself, and came up with the Hawkins Futura FP40 (or IFP40 for induction). The special property is that it can also be used for (light) frying at the start, so one pot less to use for recipes when I cook in the truck It’s the only Indian style pressure cooker that I know of that can also do frying. Also it’s a nice modern model, without bare aluminium. Price is 100-110 EUR in Europe (see, see) or 51 EUR if somebody brings it to you from India.