If it were mine, I would use the cheapest 5w-30 Synthetic (Supertech or Rural King for a cheap regular price, or Mobil 1 or PP with rebates) and change it every 5000 miles.
On my Santa Fe with the 3.3, that is what I will be doing.
Your driving habits may dictate a different interval, but for any GDI engine, 5w-30 synthetic is what I would stick with