to watch a concert...

i am wondering if i should go for :

a. Alicia Keys with guest John Legend
5 Dec
cheapest seat: $112.65

b. Paramore
16 Jan
stand or sit: $91.45

i am also interested in:

1. Muse
but i saw them in Singapore already
2. Bruno Mars
like him but not enough to buy a ticket
3. Beyonce
the cheapest were sold out and the rest are mad expensive

there are also these artistes but nope, not for me:

1. One Direction
2. Ke$ha
3. Rihanna
4. J Bieber
5. Ricky Martin
6. Leonard Cohen

well, actually i decided i want to experience a RnB/Soul concert live, so i just need to do it and buy the ticket for Alicia Keys + John Legend.
$$$$$$$$$$$$$$