OP: I also started on Mistic. I kind of thought they went out of business. All of the Atlanta distributors stopped carrying them and their website had like 2-week lead times on basically everything. That's what motivated me to upgrade…I was actually fairly happy with it.
I upgraded to an Ego Twist with a cartomizer and
tank and a couple attomizers for dripping, and I'm really enjoying it. I haven't tried a clearo yet, mostly because I think carto
tanks are insanely easy to fill already. I think it's a very solid way to go, though more expensive than a kgo. It doesn't like really low resistance or dual coils, but I think it works well and I like being able to adjust the voltage a tad based on how hot I want the vapor (cooler in the morning, etc.). Most of my stuff has come from myvaporshop, vapor alley, or vapor kings…and I've
loved their customer service compared to dealing with the Mistic website.
No regrets on the upgrade, but I've also not tried a kgo.