The Decipher CCG (there was a 1st CCG called "middle-earth" IIRC) was great and one of my all-time favorite game engines. When it's your turn, you play the heroes, and when it's your opponent's turn, you play the villains.
With the LCG, you build a deck, and an enemy deck is constructed based upon the scenario for you to play against. It's pretty decent as a solo or co-op experience. The more frustrating aspect is that when you buy the packs, over half of it are cards for the opposition/evil deck and the rest for you to actually build with. This can be frustrating as for while you will probably feel like there's not much deck building to do until you get a LOT of sets in your collection.
Of course the distribution of LCGs is beautiful and a fraction of the price of CCGs. When you buy an expansion you get all the copies you need of every card in that set. No rarities, no multiples needed. They usually release 6 small sets at $15 MSRP (but you can usually get it for 10-12) then a deluxe, larger set at $30 MSRP.
Excluding the Core Set. LotR permits 3 copies of a card in deck and the core set has some cards 3 of, some 2 of and even a few 1 of. So if you want to have the max number of some of the best cards, you'll have to buy 2 cores - but at least half of that will be the evil-side cards which you do NOT need extras of.
It is also pretty nerdy with characters and situations only from the books and some pretty obscure ones at that. Definitely recommended for hard core LotR fans. Here's a good website that outlines the sets that have been released with a card display and it has a blog on the game.
http://hallofbeorn.com/LotR/Browse