I play Nilfgaard. My deck mostly resolves around spies, decoying and medics. The speciality of the nilfgaardians, so to speak. I've got the full NR deck aswell, but I feel NR has a lot less sustainability, the lack of a decent amount of medics can really harm them when playing long rounds.
I'm also of the opinion that both Monsters and Scoia'tael, but especially monsters, are tremendously underpowered, no spies and medics for Monsters and no spies for the Scoia'tael, while those are the most important cards to stretch out games.