Well, at least we can use the word Augustus again. Damn Neo-Brutians were prone to go off unpredictably if you so much as whispered it until a few years ago.
Well, as to my choices:
Best:
Caius Iulius Caesar Augustus, obviously.
Titus Flauius Uespasianus, because I'm an ancient history addict and I admire the man for his Roman virtue and natural smarts.
Titus Flauius Antonius Maximus I
Say what you will (and I realise he wasn't a *nice* man), the Sassanids needed to be stopped.
Titus Flauius Antonius Ricomerianus Daba Africanus Maior
Talk about a recovery. They say the whole concept of oceanic exploration is his brainchild. Even if not - hey, I like big ships.
Titus Flauius Antonius Iosephus Constans
OK, he didn't actually do much when you get down to it, but he presided over an unprecedented economic and territorial expansion, and he was the first emperor to actively foster baric and anbaric technology.
Worst:
Tiberius Claudius Nero
you can't go wrong with the classics
Titus Flauius Antonius Antoninus Murena
two decades of civil war over a tax reform... and we got convertible iugera and quinquennial indiction after all.
Titus Flauius Antonius Maximus III
I know he is still widely regarded as a hero, but Rome needed territory in Scythia and Persia like a hole in the head. As far as I am concerned he is responsible for most of the problems we have been having with the Scythian nations since then.
Titus Flauius Antonius Africanus Artorius
I guess he shares equal blame with his successor, but still, he managed to start the chain of events that led to the Hesperian wars.
Titus Flauius Antonius Galba IV
What an unworthy successor to Constans. Is there anyone this ass did not terminally alienate?