There are many but the best imo is :P R O S T I T U T I O N.You can get around 500 ec a day with that or more depending on how good you are.
I mean a bit more.Not like 5 ec.I have to reshape my R8 more.Only thing to get ec's now is BH and NS.
You can get 120 ec from TT, Gv gives 60 now..
Save up 100 gold and sell it for 25ec each...That's a lot of gold
120 ec a day?
So if i do 10 runs, i have 1.2k ec
Coughcough, theres a limit to how many boxes you can open a day from TT though.