There a lot of valid points on both sides! I really like riding my 850, but it would be nice to have a RZR for the wife or if we wanted to go somewhere with one machine.
If you are riding alone at least 75% of the time, get the one up. Two of you 75% of the time get the RZR. JMO

 

Only you know your definition "fun". As said previously both are good machines and "fun" to some, one more so than another depending on the individual.

I have a Rhino and a Grizzly. If I could keep only one, it would be the Rhino, but my "needs" will be different than yours. As I get older, the better I like having that cage around me.

As to your question, I would go with the Razr, but my opinion doesn't really matter.

 

I 2nd that.

 

I rode with 8 rzr at the caw pocker run last weekend. con would be weight pro would be haul bigger cooler

 

Side by sides are for fat, lazy people that cannot ride. Just look at the people that typically drive them and you'll see what I'm talking about. RZR's will not fit on the trails I ride. ATV's are by far tons more fun. If you're going to get something like that you need a Jeep or true 4x4 truck. Not some pansy a$$ wannabe 4x4.