My intervals are DEAD ON compared to my SRM... maybe 1 watt off after a 10-20 minute interval.
I WOULD not dare re-calibrate anything now :)
As far as the TACX... it looks cool... but I'm happy with what I have now that it's finally working.
After reading what you said about bugs in the TACX... I am even happier with my decision.
Did you get your Kickr working with it's own power reading/load or do you mean using the SRM to control the load per that setting in Perf Pro?
PP is controlling the KICKR via SRM.
PP has an option to show the KICKR watts vs ACTUAL SRM WATTS. The difference is generally +/- 5%...
With SRM controlling it... the intervals are exactly in agreement with my SRM.