I have bought the EVO Omni-throttle and the Premium EVO Space Combat stick, and am gobsmacked by the quality for the price. Up to this point in time I have been trying HOTAS from large conglomerates such as Thurstmaster and Logitech, Honeycomb, etc. There is no comparison in quality, these are streets ahead even those larger companies premium offerings, so if you are on the fence, VKB is the way to go.
To cover the stick and base in general first, everything feels solid, has excellent resistance, and the buttons feel perfect. Clicky, and not at all spongey. I have especially two Premium Space Combat sticks, and there are so many buttons I can cover everything I want to do in Space Sim games and mostly everything in Flight Sims. One of the best features of the package is the base, as it allows for so much customisability. For instance, in Space Sims, I want the throttle to have X,Y and Z axis and return to centre when I let go, but in Flight Sim, I only want the throttle to move up and down. With this kit in only a few minutes you can modify your throttle to do any of the above. You can remove all centring all together and make a helicopter stick! You can force no movement on certain axis'. What I love, is you can make this stick match and work for almost any game you are playing.
Regarding the Onmi Throttle itself, I honestly wish I had two of them. They are so comfy to hold, and no functionality is lost by using them. For me, it just feels like a more ergonomic Premium Space Combat EVO Gladiator. What is great about this system is it is completely modular, meaning I can just buy the Omni-Throttle attachment and make my flight stick an Omni-Throttle if I wanted. Additionally with the different Stick heads you can buy you can mix and match to your hearts content. I will definitely be buying the F14 stick to add to my collection!
I highly recommend the VKB EVO system. If you are on the fence about another HOTAS, I seriously cannot recommend this one enough. For the price, what you are getting here is night and day from the rest of the competition. The only vaguely negative thing I can think about is that because of their custom base they have a proprietary mounting system for their sticks, as opposed to the more 'universal' mounting system of other manufactures. Honestly though, once you try these bases and sticks it won't matter. You won't feel the need to use older sticks.