The plaza's sportsbook is ok. Its the Biggest on Fremont street in square footage. It has multiple really big screen tv's. The rug is pre Plaza renovation. The crowds are small and not a ton of fun.
I get the best odds for my bets at the 4 queens, but I wouldnt watch a game there because its smaller than the size of my living room. It has 3 flat screen, five or six elbow tables and three drunk locals.
The golden Nuggets sportsbook is nice, fairly modern but is usually too crowded for me.
So...I buy my ticket at the 4 queens, run to the back of the Le Bayou and buy a football sized Drink ($18) and then walk to the Plaza to watch the game.
Just my humble opinion weggie