I know there are two very different materials the Polaris cover is offered in.
My buddy has a real thin/light one for his (maybe it's the polyester one?).
Mine is nice and heavy duty and pliable and seems to be made of canvas or a similar material? (I'm too lazy to go out to the garage and see what the tags say).
His has developed a couple holes around the seams within 2 seasons already, but mine still looks like brand new.
I love the fit and quality of mine. It goes on easy with good hooks on the straps (and they put these cool little loops on it to tuck the hooks into so they don't snag everywhere) also the straps and velcro on the front for going around the spindles are nice and long+beefy with really good velcro. Unlike many I've had in the past that were a bit too short and had cheesy velcro.
The only think I could wish for with it is that it were water proof... why the hell can't they make these things water-proof for $229???
Nothing like getting where you are going for a ride to uncover your $12k sled and find it dripping in nice mud-water!
I'm going to try dousing mine with about 4 cans of 3M "camp-dry" (silicone spray) and see if that does any good.
Otherwise I'm actually considering getting one of the cheaper, thinner Polaris covers like the one my buddy has and putting it on over the top of my original one for longer/wetter road trips.?.?
His seems to be a bit more water resistant, maybe due to the different material it's made of.
I don't have any experience with the Skinz (SPG) ones, but everything I've ever bought from them has been top-notch, quality stuff.
So I'd definitely at least look into those as an option.