I just have to say that my all-time favorite sets on SG are ones with multiple models. Especially ones who post sets as sexy as the one that Twwly and Dyme did, and obviously the most recent (and extremely popular) one with Evette and Posh.
All four ladies, as well as their fantastic photographers tmronin and Sean, did an amazing job, and I'm convinced they must know what lesbian sex is really like. I feel these particular pics are the closest to what really enjoyable g/g sex REALLY is--not just what most men want it to be. These, more than any other multi sets, impress the hell out of me. They are artistic, passionate, and completely delicious. I know that the girl/girl sets that constantly stare open-mouthed at the camera are trying to be in the style of Betty Paige, but I usually find them campy and unrealistic, whereas these two sets make me feel like I am there or at least remind me of sex I've had (and make me want more!)

My suggestion: If you haven't seen them recently, I think it's time for a visit!