I wish the search function was more functional. However, if you do an advanced search of this forum, 'pool eq and op' with the words "solar cover" you'll get a bunch of hits and you can pretty easily filter the ones you want by the title of the thread. A lot has been discussed as to the merits and drawbacks of each type. My only comment is I have an IG pool and roll my cover on a piece of PVC pipe while in the water and lift it out. I tried a cheapo 8 mil cover once and that just didn;t want to roll easily because it was too flimsy. Got a 12 mil and rolls nicely.
Al