Billy will be going for awhile. The rest are available at TKTS.
"If this is going to be a Christian nation that doesn't help the poor, either we have to pretend that Jesus was just as selfish as we are, or we've got to acknowledge that He commanded us to love the poor and serve the needy without condition and then admit that we just don't want to do it." -Stephen Colbert
It would help to know what shows are among your favorites...but without any additional info I would suggest Next to Normal.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.
Haven't seen Next to Normal, but all the others are great.
I would have to say Exit the King though. Blithe Spirit if you have a chance to see two. Billy Eilliot is great, but it's gonna be around for a while, and it's not a show with a performance or actor that is a MUST SEE.
Next to Normal! I saw Billy and N2N in the same weekend and, although Billy was great, I enjoyed N2N a lot more. And, as ratherbewhaling said, Billy's prices are crazy!!
From your favorites it sounds like you like things a bit more on the straightforward/traditional side...so I'd say skip Next to Normal.
Also, I agree BE will be around forever...so I'd go with Exit or Blithe, leaning to Blithe if you like Angela Lansbury at all...because she's a rock star in that show!
I'd say put Billy Elliot back on your list. Yes, you'd have to pay full price, and it will be around for years, but here's your chance to see perhaps the best new musical to come along in years early in its run, and then go back home and watch the Tonys show and brag to everyone "hey, I was there". It's a moost see!