If you go for a piano.
You want:
Under-damped
Overstrung
A full iron frame
Tape action Langer, Schwander or Renner if possible.
This will dictate a piano from about the 1930’s up until today depending on how much money you have to spend!
Look out for pianos that have a reputation for taking a beating like Knights K10 (were made to be moved about and stay in tune much longer) or a good quality German usually expensive though.
German
Bluthner
Bechstein Model 9
Kaps
Grotrian Steinweg
Ibach
Ritmuller
Schiedmayer
Hohner
Ascherberg or Asherberg
Seiler
Steck
Reisbach
Weber
British
Knight K10 – K20
Chapell Hs
Challen 988
Welmars Model C
George Rogers
John Broadwood
John Brinsmead
Hopkinson
Brasted
Kemble Cambridge
Danemann (be careful very variable quality)
Barrat & Robinson
George Russell
Bentley *NOT with Bentley Check action or a Richard Harley action*
Condition is king some sold for good money are absolutely clapped out/damaged, won’t hold tune, need new hammers, felts and jack springs replacing.
Good luck.