That was going to be my answer too, and I’ve played a lot of deckbuilders. It’s clean and fast and it doesn’t add any extra layers of unnecessary randomness on top of the plenty-sufficient randomness of deck order.
To this, I would probably add most of the games in my collection.
Napoleon’s Triumph is the best example of a non-random wargame, perfectly capturing all the drama of Napoleonic combat without any dice or charts.
Galaxy Trucker is the best real-time game out there, with an excellent theme and frantic play and a really high skill element and a ridiculous resolution phase.
Dungeon Lords is the best worker placement, because of the simultaneous resolution with the “second to pick the same spot gets the best result” mechanism, as well as the great theme.
DungeonQuest is the best everybody dies game, because the fights are rock paper scissors and it is just so snappy. At least one of the FFG remakes completely botched this aspect of the game.
Race for the Galaxy is the best fast tableaux builder, with the excellent system of simultaneous phase selection and the way that the cards you want to play are also the currency to play the cards you want to play.
Space Alert is the best coop game, with a great theme and tense real-time puzzling. “No-one wiggled the mouse?” the ship diverts the power from the lights to the corporate sponsor screensaver and the players stumbling in the dark act a moment slower than they intended to.
Through the Ages is the best civilization game, only possibly bettered by itself in the recent update. The lack of a map means everyone borders everyone else and the game can focus on the card drafting.
Twilight Struggle is simply the best two-player game. Still. Hand management, bluffing and suspense make for an intense game of intuiting when to push and where.
Tigris & Euphrates is the best tile-laying game, with really intense and dramatic game-changing moves available to all players. No easy moves at all.