Not including batteries and holders, if you could have only one type what would it be?
For me, I've been using the 2.5ish ohm evod with my DIY mix exclusively for quite a long time now.
The juice is 80/20 PG/VG with 8% TPA vanilla bean ice cream and FW Black Licorice at very low percentages.
Easy, efficient and inexpensive. I could easily be satisfied and have been, for a very long time with not much more.
Mind you I do add a dash of peach or banana to my clearo when my taste buds get flat.
What is or what would be your minimalist set-up?