I have 3 mechanical mods that I alternate using. I purchased a kick to use w/ my first mechanical mod prior to purchasing the other 2 mods, and it really performed badly. I had a lot of misfires, and my battery life was extremely short. I automatically blamed the kick, since I've read many posts from people having similar problems. However, using the same kick unit and the same set of batteries I have on my second and third mechanical mods, the kick works flawlessly. I never get misfires, and my battery life improved tremendously. I am not a high wattage vaper, as my "sweet spot" is around 7 watts. For me, the kick is great because I will get the exact same vape every time until the battery dies. Also, the kick will let me know when it is time to swap out my battery. When I vape without the kick, the vape will gradually get weaker, and I always have to kind of guess when to swap out the battery, as I intend to run my battery down to around 3.4-3.5v before I recharge it again.
From my experience, the mod itself has a lot to do with how the kick will perform. Also from this experience I found out that my first mechanical mod has a ton of voltage drop, as I've done a bunch of comparisons and tests with different atomizers, with and without the kick. Another test I did was to check the voltage of my battery once the kick stops working. On my first mechanical mod, the battery still has around 3.8v left, which is still plenty. On my other 2 mods, the battery will have around 3.45 to 3.6v left. I won't name the mods I have, but they are all highly regarded Euro mods. The only thing I can say is if you read somewhere that certain mods seem to have more voltage drop than others, its probably true.
I don't see the problem in naming mods...this site is about sharing information right? I've seen testing done that shows the Chi_You had a voltage drop of 0.55v, and it goes with what I've been told that it doesn't hit very hard. The results I saw on testing showed that the Atmizoo 69 and Roller both had drops of 0.96v. The EA mod had a drop of 0.9v. While I wanted a Chi_You...I'm about performance as well as aesthetic, so it has dropped off my unicorn list.