What are ayu's best concerts (Blu-ray)?

[fan4ayu]

I currently own both Power of Music 2011 and Rock 'n' Roll Circus 7 Days Final on Blu-ray and love them!

I was looking to buy only one or two more (they're very expensive). I'm trying to decide between her 2008 Asia 10th Anniversary tour or her Next Level Tour. The reason I'm looking at these is because I like the themes of these concerts. I really have no opinion or knowledge of the other ones (Premium Countdown, Countdown Live, A Future Classics, etc.)

In your opinion, which of her concert Blu-rays are the best aside from the ones I already own?

Just so you know I'm leaning towards the 2008 Asia Tour, so if that one's not as good, please tell me. I would not like to drop $95 on something that's not good! But so far I really like the ones I've gotten.

Thanks.