Visted AKS last weekend for some custom exhaust work and had my 2+ updated with linear throttle.
I think the update is awesome.
The delivery feels smoother than before and there definitely seems to be more grunt up top. The flat spot/hesitation I had at 5200rpm has pretty much disappeared. Mine was also suffering from the system too rich at idle which has now gone.
The linear throttle is just brilliant. I could never really use second gear before as the throttle was like an on/off switch. I can now feed the power in nicely in second gear without lighting up the rubber and get pinned back in the seat.
For me, the update has transformed my driving experience and the car is just more fun to drive.
Settings are 969, 979 with wmi, will see if it can handle 989 after fine tuning the wmi.