I advise you to buy the 3.5
Thats all i can advise you on...
But really just make sure you get the full shabang that comes with the car. Great amount of car for the money you pay. Sound system, push start, comfort, good engines, the CVT tranny is also a great feature if you dont wanna drive manual or in my case, couldnt get the manual as its not shipped to this country
Oh and safe

i got rear ended 5 times by an explorer, a nissan patrol and a toyota camry at 80mph. Sore neck, but... only damage to the car was a broken trunk lid, a cracked light and a bent bumper. ( an yes. 3 cars, 5 times last guy hit and kept accelerating. )
But yeah, 3.5 has alot more power

an the SE comes with sport suspension from nissan which aint a bad thing, plus sports tires too!