Stay away from pennzoil and quaker state. they contain parrafin, which is a form of wax and if you do short trip driving, the wax wont' be able to melt and will gum up your engine. Use 10w30. Stay away from blended oils, they are a waste of money. there is more conventional than synthetic in the blends. It's great marketing though.
I prefer Valvoline Synthetic, I use valvoline products 100% in every car I work on. It has never failed me.
Any other brand name is good.. Redline is superior, but it's usualy $3 more than a synthetic oil.
The biggest issue is oil filters.. stay away from Fram products. In addition to the oil caps coming loose, a lot of people have an engine ticking sound.. that's due to the fram filter getting plugged up because it failed.
Good filters are purolator, Wix, bosch, etc..
read the oil filter study. It's independant and while just 1 person's opinion, I believe 100% in it as I deal with these things every day.