New owner maybe?

I am suppose to be picking one up next week (2015 RZR 4 900) RED and after reading these forums for the last few weeks I’m just not sure.

Should I make the dealer verify the noise in the differential before I purchase?
Should I weight till the 2016 comes out?
Still trying to get the extended warranty promo to pop on the website, no luck with that yet.

Just looking for input or your all’s two cents.

thanks in advance