One of the reasons I've never watched is that apart from Rae the rest of the cast look like they are from Skins, that's not realistic at all, that you're either ugly or beautiful and nothing in between when of course that's where the majority of us are.
I think actually this case has a quite realistic look. There are no model-material actors in it - Finn and Archie are alright, Chloe looks like a lot of teenage girls (and that's necessary because it has a bit of an influence over her relationship with Rae), the other girl I forget the name of is average, Chop is below average (though I expect some people find him attractive because there is perhaps something about him....). There's a good variety - no HIDEOUS cast members, no unrealistically good looking ones either. Which is good when the show is partly about the physical aspects of people.