Georgiadaisy, It's difficult to be unbiased when one already owns an ACE, but I like to think I do a pretty good job of presenting the facts as facts, and making it clear when it's just my opinion, and letting people make their own determinations.
So please check out my review of the ACE here. I have received a lot of compliments on this review here and on other forums, so I think I did a good job of laying it out for people. There are also some videos I took in that thread too. Note: The squeaks you hear in the video are not audible to the driver. That sound is the sway bar bushings squeaking, and is being transmitted via vibrations through the frame to the camera. Mine is not that noisy to the driver, though some people have reported audible squeaking.
Specifically regarding stability: I have a Grizzly 700, a RZR S 800, and now the ACE. The Grizzly is the least stable, mainly due to the width and wheel base. The RZR and the ACE are both very stable by comparison. I think the ACE has a lower center of gravity, and your weight will be centered in the vehicle instead of on the left side, so that helps too. It's tough to measure the stability between the ACE and RZR. The RZR has a longer wheel base and wider footprint, so that would indicate more stability - but the driver's weight is on the left side, so if you're in a tippy situation, the position of that weight could throw off the balance.
It is also worth noting that in a two-seater, you only have visibility of the left side of the machine. With the ACE, you can lean out either side and look at where your wheels are planted.
I also feel that the RZR is more "squirrely" at speed on gravel roads. I feel that the ACE tracks better at speed.
I was riding on a trail with deep ruts behind an ATV with oversized mud tires. He was at 53 inches wide, and I was at 50". He was leaning hard, and at one point put his leg out and braced against the side of the trail to keep from tipping over. My ACE just drove right through it.
The ACE is not a speed demon, but it keeps up - and if you want to do slow and steady, it's geared perfectly for that.
So please check out my review of the ACE here. I have received a lot of compliments on this review here and on other forums, so I think I did a good job of laying it out for people. There are also some videos I took in that thread too. Note: The squeaks you hear in the video are not audible to the driver. That sound is the sway bar bushings squeaking, and is being transmitted via vibrations through the frame to the camera. Mine is not that noisy to the driver, though some people have reported audible squeaking.
Specifically regarding stability: I have a Grizzly 700, a RZR S 800, and now the ACE. The Grizzly is the least stable, mainly due to the width and wheel base. The RZR and the ACE are both very stable by comparison. I think the ACE has a lower center of gravity, and your weight will be centered in the vehicle instead of on the left side, so that helps too. It's tough to measure the stability between the ACE and RZR. The RZR has a longer wheel base and wider footprint, so that would indicate more stability - but the driver's weight is on the left side, so if you're in a tippy situation, the position of that weight could throw off the balance.
It is also worth noting that in a two-seater, you only have visibility of the left side of the machine. With the ACE, you can lean out either side and look at where your wheels are planted.
I also feel that the RZR is more "squirrely" at speed on gravel roads. I feel that the ACE tracks better at speed.
I was riding on a trail with deep ruts behind an ATV with oversized mud tires. He was at 53 inches wide, and I was at 50". He was leaning hard, and at one point put his leg out and braced against the side of the trail to keep from tipping over. My ACE just drove right through it.
The ACE is not a speed demon, but it keeps up - and if you want to do slow and steady, it's geared perfectly for that.