I have just commented similarly in another thread, but I now use a Vamo V2 with a Vivi Nova V2.5 (with 2.4 ohm head) and a SS drip tip and I could not be happier with the set up. I have found that at 10 watts I get a great combination of vapour and flavour and everything works as it should. The flavour is one of the best I have had compared to what I have previous tried which has been cartos, 901 attys, DCT's and Ego atty's.