Not the best team, but I have to go with the 1975 Bills for entertainment. They were socked with injuries on D side and played in shootouts regularly, especially against Bert Jones and the Colts. Best Offense in the league, Best player in the league, Best Offensive line in the league. Besides OJ being at the top of his game and setting an NFL TD record, we also had an 800+ yard rusher at FB in Jim Braxton and a couple fun receivers in Bob Chandler and J.D. Hill.
The 1990-93 teams were of course a blast to watch too, but alot of the time they just beat the daylights out of the opponent it made for alot of boring second halves.