Best pot for stock?

[revampneeded]

I'm wanting to make my own stock, to a recipe that's supposed to boil for 4-6 hours. Should I be thinking of getting a pressure cooker? What are my options?

I use my pressure cooker .
Can't imagine doing it any other way - being around for all that time, kitchen full of steam...

Thanks Georgy, when I was little my mum had an ancient one and I always kept my distance in case it exploded. Time to get one of my own, I think...

I just use a saucepan that is big enough to fit the carcass. Or not - start off, after a couple of hours turn it over and bash it a bit. Then it fits.

I use my instant pot pressure cooker. It’s easy and find that stock on the hob stinks the house out.

Righto. Entry level pressure cooker ordered. I'm very persuaded by the comments about cooking smells, as I'm planning to make fish soup for my cat, and 4 hours of fish heads blipping away in a standard saucepan could get a bit whiffy...