I like women's bedside toys.

I like tube mods better than box mods. Feels more comfortable to hold, imho.
Really, though, there are fewer and fewer tube mods that aren't mechs and aren't pieces of crap. Most (except for the sealed battery types) are also too heavy and won't vape at resistances below 1 ohm. Which wouldn't be a problem if it wasn't becoming more and more difficult to find coil heads over 2 ohms.
The Coolfire 1 that crapped out after 3 days had a lower resistance limit of 2 ohms. The Zmax will go down to 1.5 ohms, and absolutely will not work with the Kanger 1.2 ohm ("high resistance") Subtank coils.
The new Provaris will go down to 0.5 ohms, low enough to adapt to the ever changing world of
vaping. They're also flexible as to what batteries you can use in them. At least on the 2.5 and 2.5 mini.
It's worth it to me at this point to have something reliable that I won't have to worry about, and doesn't have the paperweight-like qualities of my one box mod (eVic VT).