The brand is not all that important as is the 5W-30 grade. (although you wont have to look far to find someone to disagree with this statement).
Since it it brand new you may want to change the oil after the first 5 hours of operation. This is a break in oil change where in the first few hours of running you will generate extra metal particles in the oil. Some engine mfg suggest this or something like it. Even if your manual does not suggest it - it is not a bad thing to do. If you do this, use conventional 5w -30 for the break in oil change. What ever brand you have. Afterwards I would use synthetic 5w-30.
With synthetic you will get the benefit of easier starting in cold weather and added protection.
For another $2 or so I think it is worth it. Go for it!
What brand of engine is it?
Yard Machine 22" upgraded with 6.5 HP Predator
Last edited by Toro-8-2-4; 12-11-2016 at 11:57 AM.