Hey
@davidlanghamlondon, hopefully we can help.
As
@Izan has already asked, what features would you like.
And also, what VG (Vegetable Glycerin) and PG (Propylene Glycol) ratio liquids do you use? As that's useful to know because high VG liquids are thicker and some coils have issues wicking it, but there's workarounds.
And also do you want more or less vapor?
With more you do get warmer vape used with lower Nicotine leves, but that can be tamed with more airflow. This type is known as DTL (Direct To Lung) and there's also a restricted version as well.
With less it's cooler and can be more restricted like a cigarette draw, it's usually used with a higher Nicotine level though due to the reduced vapor production. This is know as MTL (Mouth To Lung).