I didn't have any Atari consoles growing up, but they were always around me.
Biggest interest is the 7800. Have a single console, 3-4 pro-line controllers, and the CX-78 (euro controller), Slowly getting to a full loose set (stuck at 44 right now). This console has really grown on me.
I have a boxed 5200, including a boxed track ball controller, and three games for it. Still haven't tested the damn thing.
I have about 40 2600 games, pretty well-cultivated grouping of classics. Very little filler. Lots of Activision in there. Don't have a 2600, though I have a bunch of OEM and third-party controllers. Use the 7800 for those.
Also, any INTV love? Love the library, hate the controllers.