Symbian or Android?

Hi friend,
Which one should I choose?
Nokia 500 or Galaxy Y???

I want to replace the HP but still confused which one to take.
between the Nokia 500 and Galaxy Y.
If I choose the Nokia 500, I have to sell my Nokia C5-03.
If I choose Galaxy Y, I do not need to sell my Nokia C5-03 but there is one problem, that I will have 3 HP.

N500 reliable in multitasking job, while the Galaxy Y only superior because of its operating system, Android.

based on the comparison of prices is more expensive than the N500 Galaxy Y.
difference in price is quite far away, Rp.495.000

Help me,please.