Which of these 2 motorcycles is the best Choice for a rookie rider?

Have you sat on both bikes? Number of cylinders, fuel injection/carbs, ABS/no ABS, top speed, etc. don't mean as much as comfort when it comes to a bike you're going to ride on the street. If the bike is uncomfortable how much will you want to ride it? If the seating position/comfort is about the same with both bikes then go for the bike with the warranty. A warranty on a used bike is nice to have. Hopefully you'll never need it though. Have fun with whatever you choose, and be safe.