My personal vote would have to go to Epicurus (followed by a close second place for socrates).
(below blatantly stolen from the most excellent book 'the consoloations of philosophy by alain de botton)
Epicurean ideals in summary
What is and is not essential for happiness
Natural and
necessary
Friends
Freedom
Thought (abpout main
sources of anxiety:
death, illness,
poverty, superstition)
Food, shelter, clothes
Natural but
unnessary
Grand house
Private baths
Banquets
Servants
Fish, meat
Neither natural
nor necessary
Fame
Power
"Nothing satisfies the man who is not satisfied with a little"
"happiness depends more on the possesion of a congenial companion than a well decorated villa"
"The possesion of great riches does not resolve the agitation of the soul nor give birth to remarkable joy"
So who's your favourite?