That G.E. 3-5266 you kind of wished you had gotten was my first boombox back in the '80s.It's nothing like the larger 3-5268 but is definitely "old school" heavy build and is loud.It's sound is balanced but not particularly bass heavy.That's a nice quality box.
Most of what you left behind I would have also at this point in my life.They all look light weight,under powered,and most with no line-in.The mono box is one I would have snagged also along with the JVC mini sporting the map graphic.It's nice that you document whatever you see.I used to do that but I never really hunt anymore.The passions still there but I've other things going on.