Rank 12 atm, it's so hard to get further without the right legendaries, most top decks include Black Knight, Ragnaros, Thalnos, Leeroy etc and of course certain classes run their legendaries as well, like with Paladin.
In the beta/season 1 I got around this rank, and I found myself not only get stomped by legendaries, but also because I didn't know the combo's of the enemy. Now I know the big plays, doesn't mean it's always as easy to work around, but at least I know them and do my best to control the game. But now I'm just at the point that Legendaries make or break the deck, especially since the meta changes , 1 of the decks I want is Paladin deck created by Kolento, some of the main cards are Tirion, Wild Pyromancer, Equality, Consecration, Aldor Peacekeepers lots of taunts and some healing, including Lay on Hands. What you basically do is block their damage, take away their high damage, board clear, heal up and stomp them with strong minions and weapons.
Problem is that it's freaking expensive. Now you don't need all the cards from this version:
http://www.hearthpwn.com/decks/83491-new-pally-control
That's basically a modified Kolento version, you don't need the Ysera, and I would prefer a Cairn Bloodhoof, but you can do without them both, here is the thing though, the others are needed, and I'm missing Lay on Hands, Tirion and Black Knight, that's 4k dust to craft, which I don't have, and since I'm not getting lucky with the top tear legendaries, the only 2 good ones I got is Alexstrasza and Al'Akir, I could disenchant some of the others, but that doesn't get me close enough.
Basically to advance, it's pay2win, because the meta has turned into expensive decks