been having a Star Wars marathon,and as usual,when i have finished watching Episode 2,i watch my two Clone Wars DVDs from 2003 that are set in between 2 and 3

and i love the series,but i haven't even seen any of the newer CGI series 'The Clone Wars',that started with the feature length in 2008

there are some good plot strands from the 2003 series,like how General Grievous got that wheeze,and Anakin being made a Jedi Knight,and C-3PO getting his Gold plated suit
can someone tell me if they both co-exist or does the latter cancel out the first series,or is the latter a remake
and if anyone has seen both is the latter series any good/better?
thanks
EDIT:hmm,i just found this picture

and the Dark Jedi on the very Left(Asajj Ventress)was killed in the series i watched by Anakin(unless she survived her fall)