First Big Ride, looking for a Second SxS

Went on a 50 mile ride from Prescott to Crown King AZ in our 09 800S. It was the first ride for us. We had a 4 seater 1000XP in the group that my wife got ride in. She said it had a big difference in ride over our 800s. We are looking for a second SxS, but the 1000 is not in our price point yet. Is the 900xp worth the extra $1500 for used one over another S?
One question on the 800 when coming down steep hills. It seems to go into neutral and thought I could smell burnt rubber. Did I harm belt? How do you drive them going down steep hills like that? Feather the throttle? It’s OK to let it do that? Or?

First Big Ride, looking for a Second SxS

Went on a 50 mile ride from Prescott to Crown King AZ in our 09 800S. It was the first ride for us. We had a 4 seater 1000XP in the group that my wife got ride in. She said it had a big difference in ride over our 800s. We are looking for a second SxS, but the 1000 is not in our price point yet. Is the 900xp worth the extra $1500 for used one over another S?
One question on the 800 when coming down steep hills. It seems to go into neutral and thought I could smell burnt rubber. Did I harm belt? How do you drive them going down steep hills like that? Feather the throttle? It’s OK to let it do that? Or?