I love the VKB Gunfighter Pro stick. I saw the ad for their new STECS throttle. I found some good photos along with descriptions of the different options. If you are looking for a throttle modeled after the Su-57 to match the MCG Pro Ultimate stick grips, then this is the throttle for you. I was more interested in their original concept of making a sliding throttle that operated similar to the MiG-29/Su-27 throttles.
I have Warthog HOTAS, but I use the VKB stick with all of the WinWing Hornet throttle/combat panel/take-off panel/UFC/MFD hardware. I don't really need any new hardware at the moment. If I were to buy anything right now, it might be the WinWing Orion 2 throttle with grips for the F-16 and F-15E/EX. But my experience with the VKB sticks tells me that their build quality, longevity, control density, and programmability would make their throttle a better choice over the long run. I will wait and see what people have to say about both the Orion 2/F-15EX combo and the STECS. I might just retrofit F-15EX grips onto my existing Hornet throttle, but you lose a little functionality by not switching to the Orion 2 base: a 4-way hat (whose center press still works) and two little buttons on either side of the hat.
In addition to the new STECS throttle, VKB has announced the Gunfighter IV stick base and the ability to get kits to upgrade Gunfighter III sticks to the IV standard. I am more excited about this than the throttle. The IV has one key feature that will get my money: you can swap grips without reflashing the base. The new base unit will sense which grip is attached and automatically use the correct firmware/config file. I already have all the VKB grips and bought the adapters to convert my Warthog A-10/F-16 and F/A-18 grips to VKB. The ability to swap them at will is something I have always wanted. I have two Gunfighter II bases that I upgraded to the III standard. I guess I will be upgrading them to the IV standard. But I also need new bases, "black boxes", to get the auto swap feature. So maybe I will buy a complete IV stick and keep the old ones as III's?
Here is a link to detailed info on the STECS and Gunfighter IV:
https://www.reddit.com/r/hotas/comments/153uu8o/vkb_hotas_phase_one/