Lendl definitely belongs in the '80s and Becker and Edberg broke thru in '85 so the decades don't fit neatly as you suggest. Nevertheless, here’s how I’d classify the players you listed ...
Highly entertaining/enjoyable to watch:
Becker, Sampras, Chang, Agassi, Kuerten, Rios
Moderately entertaining/enjoyable to watch:
Lendl, Courier, Korda, Ivanisevic, Muster
Rafter, Edberg, Krajicek, Philippousis, Stich, Henman, Correjta, Bruguera, Kafelnikov, Costa, Moya, Martin
Nadal, Federer, Agassi, Djokovic, Del Potro, Nalbandian
Soderling, Murray, Ferrero, Hewitt, Davydenko, Safin, Ljubicic, Gonzo, Tsonga, Verdasco
Roddick, Henman, Gaudio, Moya, Karlovic, Blake, Haas, Robredo
... Far less sleep-inducing tennis matches overall in the 2000s and with the EPIC, COLOSSUS Naderer Rivalry [which EASILY trumps Sampras-Agassi], the Noughties wins handily IMO.