This one has the self cleaning stuff, the smart stuff, it just sounded less hassle to me. And its won awards. I really don't know about lower wattage vapes, I did get the hard sale on this, but if its won an award then it can't be bad at all lolits still much cheaper than £10-15 a day for a pack of cigs.
i can easily get through 50ml a day and ive saved around £20,000 in 7 years.
sounds like a mouth to lung tank might suit you better. no more than 10-14watts and a 10ml bottle will last around a week.