If you use Mobil 1, use 10-30 for sure. I recommmend against Mobil 1, however, because many suby people experience oil burn-off with it, myself included. It is a good oil though.
Try Castrol 'made in Germany' 0-30, it is very good stuff.
And PureOnes restrict flow. The OEM filters are very high-flow, and tests have shown that high flow/lesser filtration trumps high filtration/restricted flow. If you car is going into bypass mode, then what good is the ass kicking filtration media? Anyway the OEM filters filter excellently.
Stay away from FRAM. Period.