Here we go again I do not see any comparissons in comparing a 100 to a 102 to 105 or a 106 the later should have more power with more cc's to them but they all do not or do run with a DA 100 but it takes a few extra cc's for them to get up to the DA. This is just for thought for you JohnVH I have BME ZDZ and DA I would not own a 3W Either DA or the BME will be a good engine. I would also add the BME I have is the old first version 100 and it has a very smooth transition I think it is the smoothest of any engine I have at this time as for the shake it does not shake any more than the ZDZ 80 I have.

Steve Hill