With a TOW of around 79 kg, would you rather recommend the uncertified Ozone Octane in 20 m² or the LTF/EN C version in 22 m²? I tend to the certified 22, because that's seemingly the most common/popular one - judging from the number of forum posts. I never read anything about the 20. However, due to my rather light TOW, I'm not sure if the 22 may be a bit too big and hence, too slow, for me. Any advise?