Very, very debatable.
In your case, Csacsa, I'd probably go with the Ewok Village; like Strongbad said it has a lot of better play features, and at these prices it's more of your personal preference.
In no particular order:
1. Weathertop/Helm's Deeper Aragorn; little lacking in detail but I like the general look and simplicity.
2. Captain America.
3. Iron Man Mark 42.
4. TDKR Batman.
5. TDKR Bane.
6. Deadpool.
In case anyone was wondering, the new LOTR wave's now available at Walmart, so I assume you could also get them at Target, Toys'R'Us, etc.
Castle sets aren't in stock yet, though.
Is there ever a such thing as too much detail on a minifigure? It might just be me but the triangle fold across Luke's torso just looks weird; they should've kept most of it shades of black.
Other than that, this whole thing is pretty awesome.