Bigger and roomier, The 800 Crew over the 500 Crew. I have a 800 Crew (2010), mainly to haul people around, and play around here in Mich. I totally love mine.. My friend has a 500 Crew and it is a little smaller,( motor etc.) but he really likes his also. We ride around together, but he has a nice Ranger also. Just preference I think. Wouldn't be ashamed to own either one of them. But I wouldn't trade my 800 for his. And the heat issue in the cab, as been talked about all summer.That is my preference.