Rush has always been a greatest hits band for me. I've had the Spirit of Radio 74-87 Greatest Hits cd for the last 15 years and felt it was enough and I love a lot of the songs on that compilation.
Last week, I watched Beyond the Lighted Stage and just felt the urge to really explore their discography.
So far, I've checked out everything from Test For Echo onwards (I used to have Test For Echo when it came out, but sold it since I was into far heavier stuff then) - Test For Echo, Vapor Trails (remix), Snakes & Arrows & Clockwork Angels. I'm really enjoying them all, Vapor Trails the most so far.
Also working on 2112 and a few live ones (Exit Stage Left, Time Machine).
Other than Moving Pictures, is anything else considered essential? Are any of the live discs better than the others?
Worm can: OPEN
Haha, you'll get 100 different answers to this, but while I'll give you my opinoin, I'll start with this: if you don't want to go chronologically (a process for which Rush is almost perfectly suited, due to the arc of their career) then you at least have to do what the band (implicitly) did and that's break it down into segments.
There's the first, metal segment: Rush - 2112, capped off with All The World's A Stage
There's the second, prog segment: A Farewell To Kings - Moving Pictures, capped off with Exit: Stage Left
There's the third, keyboard segment: Signals - Hold Your Fire, capped off with A Show Of Hands
There's the fourth, I-don't-know-what-to-call-it* segment: Presto - A Test For Echo, capped off with Different Stages
There's the fifth, I call it "encore"* segment: Vapor Trails - Clockwork Angels, capped off with... their "retirement" (each tour had a live release here, so there's more than one "signature" live set in this segment).
* Encore because it came after Neil's stepping away and no one being sure if he was coming back
I think you need to at least sample one record from each segment to really get a feel for the band. I'm not sure any of their live albums are really indicative of a show - maybe All The World's A Stage, maybe Different Stages - until at least Rush In Rio.
For me:
1st: 2112
2nd: Any of them, really, though Hemispheres is my favorite followed by Moving Pictures
3rd: Signals or Power Windows
4th: Presto or Counterparts
5th: You've got that covered