Went out to Kink Glacier yesterday with a couple of friends. It was my first real action on my new Grizzly 700fi w/EPS. One of my friends brought out his 2005 Grizzly 660. I wanted to compare our bikes because I sold my 2003 Grizzly a few months ago to buy a Rhino 660. I knew what the Grizz 660 could do and how bad it is for fuel economy, so I wanted to gage if the Grizzly 700fi was an improvement or not. The only real difference with our two bikes is his has stock tires and I have 26" ITP Mudlites on ITP SS106 12" Wheels. Other than that, we are Stock. His bike had about 750 miles at the start of the day and mine had 142. Placing our bikes side by side you get a real look at the new A-arms on the 700. Lots more usable clearance on the 700. Same clearance height but the 700 is much wider than the 660 between the wheels. The next real difference was when we crossed deep water. The 700's air intakes are moved forward and higher on the bike than the 660. This proved valuable several times during the day. When I crossed deep sections I would pull the front up out of the water and wheelie across till I hit the other side. This got my rear wet several times but no water entered the bike. The 660 was not as lucky. By the time it was deep enough to wheelie, it was sucking in water. We poured about 8-10 cups of water out of his bike after one crossing and none from mine. So, in this arena, the new 700fi is truly improved. The two bikes seems dead even on most other issues. The one thing I did notice was the 660 seems a little faster than the 700 on open smooth flats. Not much but maybe just a little. That may have been due the the tire/wheel difference. In the woods the opposite was true. The power steering allowed me to pull several hundred yards ahead on any rough terrain. The last comparison was in fuel mileage. We did not take any extra gas so this was an important issue later in the day. The only real weakness on my old 2003 Grizzly 660 was poor fuel mileage. My wife's Polaris 500 Sportman always gets great mileage. I would be on empty and she would have more than a 1/4 tank left. So, yesterday we watched our fuel gages pretty closely. About two miles from the glacier my buddy's 660 dropped to 3/4 of a tank. Shortly after mine dropped to 3/4 as well. We played around in front of the glacier a bit and then headed from the river side of the valley to the opposite (North) side toward Metal Creek. When we got over to where the old A-frame cabin burned down the 660 hit 1/2 a tank. I was still on 3/4. We started heading back. About half way back the 660 was showing empty but the fuel gage was not flashing. I was at 1/2 a tank. We got back to the trucks and the 660 fuel gage was flashing but my buddy never got into the reserve fuel. I was still showing 1/2 a tank (realistically near 1/4 ). So, it appears the 700fi is improved over the 660 for fuel economy but only slightly. We are going to record how much fuel it takes to refill both bikes and that will be a better indicator. Once back at the trucks and knowing I would not need fuel, I let my buddy jump on the 700fi and take her for a spin. Needless to say, after experiencing the joys of "Power Steering", my friend is now looking at getting a new 700fi. I am very impressed with the 700fi and love the power steering. If fuel mileage ever becomes a real issue, I will just take the Rhino. With an 8 gallon fuel tank I can ride all day. I have two awesome machines...I just wish I could ride them both at the same time.