I've heard that old cast iron is better than new. The thought is that the casting method, metals used and finish were better. It's easy to find contradictory views however.
We have a couple we use frequently. If it's too crusty and stuck with whatever, I use a chainmail scrubber, maybe a little detergent, heat it dry and add a thin coat of oil - right now I'm using Avocado oil that the wife buys in a spray can.
We have a HexClad sauce pan the wife bought as a test. It doesn't live up to all the hype, but in all fairness it is holding up to the abuse my sons put it through, and it cleans up to a near new condition.
Since we're moving soon, the wife has decided to leave all the old cookware with our sons, and has purchased a full set of "Made In" cookware - that's the actual brand name. Haven't used it yet, but it's damned expensive so I hope it's worth it.
I'm not fussy, the only ones I don't cook with are aluminum or Teflon coated. My personal preferences are cast iron or stainless steel.