my vote is for mobil 1 as well. if you are into changing the oil yourself, get the fumoto drain valve. makes changing the oil a lot easier with the twist of the valve. if you are in a hurry and can't wait for the engine/oil to cool down, the hot oil does not get on your hands.
I'm also a Mobil1 person. Though I just did my most recent change with Pennzoil Platinum synthetic. Any good synthetic is going to be fine if you stick to sane change intervals (6000-10000 miles). Walmart usually has one of the synths on sale for about $19-20 for a 5qt jug. Buy 3 jugs and you've got oil for 2 changes plus a wee bit left over in case you ever need to top it off.
I ran M1 in my Tundra from the 1st change and the oil never looked dirty on the stick even at change interval and 95K miles. I will be doing the same for my Charger. So, does Wally World carry the odd weight (5W-20)?