Great choice....they were the only team in NFL history to finish the regular season with the leagues best offense and the leagues best defense.
IMO, the 93 Cowboys were the greatest and most complete team of all time and rank the 89 49ers as a close second.
The rest as follows (per era and not specifically the exact year):
#3: the 70's Steelers
#4: the 85 Bears (dominant defense and a complete offense of that era including argueably the best RB of all time)
#5: the 94 49ers (the best Free Agency team collectively)
#6: the 97 Packers (as well-rounded as any team in any era, including special teams)
#7: the 95 Cowboys
#8: the 98/99 Broncos (take your pick)
#9: the 90 Buffalo Bills (one good Defensive Coordinator short of eliteness....had the roster but poorly coached)
#10: the 2000 Ravens or the 2002 Bucs (simply because of defensive schemes opposing teams could not overcome in their era, similiar to the 85 Bears "46 defense")
Young team....new coaching staff....13 years of irrelevance...."Let's Go Buffalo!!!"