Rem 121 pump - fair shape. No scope mount
CZ 452 sporter with leupold rimfire scope
The Remmie because it is way cool and you want one rifle with iron sights. Yes I know you're nearing retirement. But think of all those guys who retired 100 years ago before scopes were common. Somehow they managed to keep shooting with irons and so will you. (And the Marlin would be easier to replace.)
The CZ because I presume it's lighter and you're nearing retirement.
Same.
The rem is a fun little gun to hunt or plink. Old school. Granted, am the nostalgic sort.
The CZ is a really decent modern sporter, suited to hunt plink or bench. Odds are, among the most accurate you have there.
I understand there are marlin fans and ruger fans, but am not hearing that you’re dedicated to any of those names, so, there you go.