I found the method that I mentioned works best when the ti KISS carts are new but after the first few weeks, it'd probably takes 3x 3 second bursts to get the same sized hit. Sticking with 3x 2 second bursts when you first get it would be ideal so the wires don't get burnt as quickly and then adjust accordingly when you feel as if the hits aren't enough anymore.
Usually in the beginning, the wax gets all vaped up and there's nothing left over but after a while, the coil won't get heated up as quick which makes the wax just melt off the coil instead of fully getting vaped. I always reload after every hit. As to why you're not getting much of a hit, try freshly charged batteries every time. With the coil saturated, that should be enough. Adding anymore to that would just result in it melting off into the sides which isn't ideal.
IMO, the globe has better vapor production, wick absorption and since you get 2 cartridges instead of 1 for a cheaper price than the ti kiss cartridge, it's pretty much a given on what to choose.
Oh yeah, I also forgot to add, after using the globes for a while, the coil doesn't heat up as quick so I thought that it helps when you first heat up the globe cartridge, the first pull you do should be a second or two longer than the other pulls. Gently inhale until you see vapor production then stick with the 3 second max per burst. I found this method to be optimal after using a globe cartridge for a couple weeks.
Also, I've been using mainly my Persei shorty with the globes since I find that it produces better taste and longevity than with the original tube. Don't get me wrong though, when I just want to get ripped with clouds, that's the go-to.
7.4 -- big hit n zzzzzzzzzz out ! 
