Now I know paper figures are by no means everything, but I have been looking at them none the less. It seems to be, the 070 has significantly more torque than the 076, and the same as an 088 (well, 0.1Nm less), while the 090 is quite a bit higher. My sources are the test reports in the reference links for the 880, and the service manual (thanks dibbs) for the 070, 090 and 076. What I'd like to know is, why is the 070 much higher than the 076, even thought the 076 has a (2mm) longer stroke? why is the 076 so poor compared to all of them? Why isn't the 088 much more torquey than the 070? Do people's practical observations confirm/blow this comparison?