I have the Race Logic Traction Control on my E30 M3. Can't use it for racing in my class, but the rest of the time it is terrific.
It's miles beyond the nanny / lawyer type TCs on new cars. Not at all the same. It's fully adjustable with dozens of parameters, can datalog your car to help fine tune it. You can even diagnose brake issues with the logger as it records wheelspeeds among other things. You program it with your lap top. They give you a base program and you use that or try to improve it. It has a knob to set the amount of slip from none (snow, heavy rain) to some to lots (drift). It even has launch control that is pretty sophisticated with launch RPM set points, detail about how much spin is allowed off the line and when TC will come back on, full throttle gear shifting and so forth. You can set it so that you never really feel it at all...you just find that there is more time for you to make a gas pedal correction. Or you can have it be more intrusive than OE units. It's cool on broken pavement with patches of good stuff along the path you are taking. It will ease off instantly on the bad stuff and provide power on the good stuff way faster than any human can react. Multiple times a second. It really is a neat unit. It interupts the drive to the fuel injectors...or spark with an add-on box. There are mutiple levels of cuts 4-5 altogether. All tuneable. It sounds like a misfire when it kicks in, but is very smooth.
I have autocrossed the Elise three times. The third time had a tight hairpin where a downshift to first was needed. On that turn only, I could get some wheelspin. But not too bad and no oversteer excess ensued. The other two autocrosses were basically 2nd gear everywhere after the initial 1-2 shift. No issues there at all using the LTS suspension. The Elise does not scream for an LSD the way some cars do. Rear heavy, plus no rear sway bar, plus sophisticated suspension => good grip.