TripFarmer,

Well, I don't want to violate their copyright. You can buy a single
article from their website, I think, but frankly, the subscription cost
is made up in savings through their recommendations real quick for
anyone owning an aircraft, IMHO.

The essence of their testing has been mentioned in this thread already,
but the details are very interesting, too.

--
Thomas Borchert (EDDH)