The Sport TS is pretty natural, comparable to the Bosch but with less brute force than the Bosch. d8veh has already pointed out, when you climb a hill, the power maxes out fairly early, you can keep pushing on the pedal, thinking it may go up more but it doesn't - this point does not matter if you live in a flat area like Dublin but it is a lot hillier where he lives (Telford), it sort of takes the fun away. I think if the response curve can somehow be modified by programming (eg you can set 100% response to 20NM for someone who lives in Dublin, 40NM for someone who lives in Telford) then it would be perfect. The trouble is we have too much choice already albeit nothing is quite perfect.