I habe both and both are great. The Tekin is more adjustable and if you have hotwire its nice and easy with a tablet, phone, or laptop. And keeps the fireware updated.
You pay for that type of stuff. Honestly side by side speed runs you wont really see a difference it comes down to set up and personal preference. I love Tekin.
I used Tekin when Novak was top dog bay in the Cyclone days. Every1 said they were going out of business. They took a step back and came back to rule the market and but Novak out of business. That says a lot.
I take pride in my gear and buy the best i can afford. And in most cases ill wait and extra week or 2 inorder to buy tekin.
Currently own 2 rx8, 3 rs, 2 rsx. Yet to have issues with any.