Darth Calladus
Mr. Throwback
Tyranus is my personal favorite followed by maul..... but i wont give them the title of most powerful sith. but i dont think they get enough credit......they all died because of really bad reasons so we dont excatly know of what wuld happen if they were still alive. but heres my view on the matter of maul and tyranus(feel free to disagree):
Maul
if he hadnt been arrogant at the end of the battle and jus finished obi-wan off when he had the chance, i belive there is a slight possiblity that anakin perhaps wuld have never been trained, but then again because of his wonderous exploits on naboo i belive he wuld been trained by who i dont know....and if any better than obiwan wuld have it jus depends. as the future of the sith with maul and sidious.....well he wuld have continued maul's training but. im not sure of his plans for a clone army. when maul was killed, sidious had to improvise. so the questions of the sith is: what were sidious plans before maul was killed?
Count Dooku
well not many agree but thats only because they havent read the book on the movie, but it is true that Dooku lost to anakin on purpose, he was told by his master to only kill obi wan. i suppose he thought he had him down when he threw him across the throne room and made a balcony collapse on him. im not sure about that. as for his death, Palpatine's plans were different than what he had told dooku the. the real plan was to have him killed of by anakin. palpatine knew he was powerful but not enough to beat dooku with all his age and experience. the thought of having the choosen one on the dark side is probably btter than having an 80 yr old dark jedi master. Well why make the trade for anakin and dooku when dooku is still better? well anakin's exploits are many and he was very powerful at such a young age. all he need was more time training and experience and he wuld be great. palpatine said himself that dooku was a necessary loss, and that anakin wuld become more powerful then himself.and besides if the prophecy is true about anakin then he had to turn him to the dark side, for the fate of himself and the sith.
but now heres the thing. what wuld happen if dooku didnt hold back and jus killed both of them off. with the choosen one dead and the great general obi wan gone. all palpatine has to do is iniatie order 66. and lets be real palpatine can take on the enitre jedi council. no sweat... as can dooku can kill of all the jedi in the temple, of course with the help of the clones.
(takes a breath) ok now i know some if not most of you are gonna disagree but what im saying from all of this is that dooku and maul havent really had a big chance to shine, or just flat out blew it (maul)
and well we havent really seen them enough, so i think i wuld throw maul and dooku a bone and say that there up there with the anicent sith lords. it even said in wikipedia that dooku and/or NJO luke were second to Tulak hord in sheer lightsaber skill. it really makes me mad because i thought maul was great.....but is seems as though nobody likes him anymore, and his name jus gets tossed around like trash.