I have an Aspire Cleito 120, which comes at 4ml. You can buy a "fat boy" tank from Aspire that takes it to 5ml. There's also one for the normal Cleito.
The coils for the Cleito 120 are damn near as big as a nautilus Mini. Suggested wattage is something like plus 80. I got to 60 and almost died. If someone had suggested something like this when I was thinking about quitting smoking, I would have kicked them in the... I'm sorry. Maybe I'm an old f**t, but these high wattage folks are crazy.
While I do have devices that go to at least 100 watts, I've never had a reason to get above 15 and that's rare.
I honestly don't know how they can stand the heat at such high wattage!