I've tried decal girl, XO and stickerboy. I like the stickerboy ones the best. granted the decal girl purchase was right when the original surface came out and their cuts werent quite right. they sent me a replacement when they sorted it out but I already had another skin on it by then. if you've seen stickerboy's "extreme fit" on an iPhone, it shows how exact their cuts are. the skins are thick enough to be very durable, looks the same now as about a year ago with heavy use. I dont use a case so I cant comment on that. honestly never thought it needed one after applying the skin but it isnt any problem slipping into the surface dock if that helps at all.