I switch around a lot, but in terms of small, nice and side button I like the Atmizoo Dingo. Button is perfect and it works well all the time View attachment 34357
In fact, despite the 4nine being slightly smaller, I actually prefer the feel of the Dingo. The Roller is a telescopic mod while my Dingo is the ' add a tube for bigger batteries' model so no extra telescope width added. Usually use it in 18350 mode, sometimes switch to 18500, but its generally a nice thing
also a fan of the bottom button Astro, but the fact its a telescope adds a couple of mm to the width. not a lot, but noticeable