I thought I was a bit over the top when I had 6 devices, 6 flavors going all at once, Now I'm up to 12 !!! It's how I keep from getting flavor fatigue. I've settled down now tho. But only b/c it was so time consuming at bed time; plugging everything in! I thought I was going to need a wheeled cart to tote all my devices around the house lol !! So, I leave all but 2 in their dedicated area. From time to time I visit that area, instead of carrying them back-n-forth to various rooms. I was taking 2 to work, now taking only 1. But most days I come home for lunch, and grab a different one to take back to work with me. Now I don't have to re-charge / plug in every single device every single day. And don't need to re-fill 12 devices at a time lol !