Get the eVic VTC mini!! I have 3 of them and love them. Same size as the Cloupor mini. It's great being able to stand them up to charge since the USB is right under the buttons. They also have firmware upgrades online. I have a cyan one with the Cubis tank so I ordered the RBA rebuildable coil from Fasttech to try out. They say it isn't very sturdy but for $3 it's worth a try. I'm vaping on the eVic with the Cubis tank filled with Lemon Cream as I type this.
The curve on the 60W is what makes it so comfortable to hold. I thought I read that they fixed the threads starting with the 30W? I ordered the colored doors so I've got a black and white, dark blue and silver, and one I just left black and silver. My Kayfun is on it. I just got the blue enamel 30W a few months ago and it's really pretty.

Every one of my iSticks 40W died on me. I have 3 30W that are still working perfectly. They are a year older than the 40 watts were when they just quit working. That's what lead me to stop buying with built in batteries.
I also have a lot of mechanical mods so I have enough mods to last a lifetime and more. I'm trying to stop buying new ones. Lol. Now I'm working on tanks that I don't have to buy coils for or uses rebuildable coils. I finally got out my 3 year old Kayfun that I'd never even tried and I really like it! So I ordered 2 more newer ones to try. I use the premade coils from Fasttech that are super cheap. You can get a pack of 50 for $2.09 and they work great.
$2.09 Pre-Coiled Wires for Rebuildable Atomizers (50-Pack) 50-pack - 1.5ohm / 0.3mm dia. / 30*30mm leads at FastTech - Worldwide Free Shipping
They work to rebuild coils and in my Kayfun. I need to order a lot more and in different ohms. So much easier than trying to make them myself but I've got the supplies if I have to do it. I used one and rebuilt my first coil (a Kanger AeroTank coil) in about 2 minutes!
I'm looking for V2 of the Ego One Mega. Just ordered one of the original versions from Fasttech. I've read that the rebuildable coils for it are really easy to do and they have great flavor. I can't wait to try it out.