I'm debating which oil to use during my next oil change; i know none of them can harm the car in any way.
so here are my choices:

1. Mobil 1 5W30 ( I currently run this) - no difference between this and regular non synthetic oil toyota uses.

2. Castrol Syntec 0W30 ( I use this in my BMW, it's green and it says made in germany) not that it makes a big deal

3. Mobil 1 0W20 (I just started seeing this, maybe it's new and perhaps some toyota dealers are using this)

They all cost the same at a local store near my home except the
castrol costs about a dollar lower at $7.50CAN.

luckily the prius only holds about 3L to be right at the middle mark, so changing oil doesnt cost a fortune.

any comments or advice is greatly appreciated.