Loop-loc is the cadillac in quality AND pricing and usually have to go through a distributor. There are some other good brands like GLI. I'm a fan of mesh style safety covers. They do allow dust to go through with melting water, but I'd rather have that water melt in the spring and go through the cover rather than worrying about all that weight, especially in a heavy snowfall year. They are also lighter in general so easier to install and remove and tend to last a little longer. Solid covers with mesh drain panels are a good compromise too. Use the search box for "safety cover" and you'll find several threads with good discussions as well.
Good to be thinking about the winter cover now, although sometimes there are more sales as fall approaches. Whether those sales are much better than normal prices, I'm not sure.