Is it worth it?

[Killer Guerilla]

I'm thinking very seriously about getting into planetside, but as I've never played a subscription game before I'm doing a bit of research first.
As an Aussie, will the game lag too much to be playable? (I am on ADSL however)
Are there people online all the time, or are there dead periods? (If so, about what time do things go quiet?)
Is it worth the money? (I figure I'll play it a couple of hours a day on average)
Should I enjoy it as someone who is a FPS fan and played both Tribes games religiously?

Cheers,
Killer Guerilla