get a dna30 with a kayfun lite tank
never lets u down =) budget less then 300
if ur going for dna30 clone , get it from a reliable shop+service
i would recommend infinity vapor@pandan indah.
i heard many that bought a clone and had a malfunction chip when firing but nvr experience any for over 5 months now

p/s make sure u get v2 dna30 clone.the previous versions or old batch are mostly faulty

its moderate .it has a balance of taste and vapor production(in kayfun lite) if u wanna sub ohms ,u cant do it on a dna30.its lowest is 6ohms .any lower then that ,it wont fire =)
and if u wanna sub ohms on a regulated device ,get an ipv2 50watts.that is kick ass !