I have the comfort pack fitted now on original Spax and the improvement is like night and day. Very light steering. Ride feels good too.
My car (chassis 931) is also on Spax and I think ride quality overall is surprisingly good. Also, the roads in southern France are mostly better surfaced than those in Britain and bump steer is almost certainly less of an issue here, but it is still noticeable at times.
However, what I want, apart from getting rid of the bump steer and the occasional collisions between track rod and exhaust (which make me wince), is a small adjustment in the handling balance, specifically sharper turn-in (without getting excessive oversteer). The steering/comfort kit is unlikely to provide that change, I think.
