well I am not even in the USA, but one thing i do know is this.
I have flown with theJC28, MT35 and the DLE30. the JC 28 and MT 35 were even on the
very same plane so i can make a direct
flying comparison on them. The JC 28 is a great motor, starts and runs really well. Pulled my 25% yak around for 18 months and probably50 litres through it with a menz18x6 @ around 8500rpm(low load prop). That very same Yak is now being pulled around by an MT35, spinning a JXF 19x8 ( higher load prop) at 7250 rpm. sorry but the JC 28 Evo 2 version wouldnt do that. The DLE 30 turns the 19x8 JXF at 7300 so i would guess on the same plane its much on a par powerwise. the JC was sluggish out the hover becuase of the 18x6 prop. the MT jumps out the hover simply becuase the 19x8 pulls the airframe better
What counts is how it flys for
YOU!
Nothing wrong with the 28, but it just wont beat a DLE or MT for outright power
unless of course i just couldnt set the jc up as well as the DLE / MT
there is an engine out there for everyone and each application, just do the reading and dont be sold whatever is put in front of you.......
prop vs RPM comparisons are there for us becuase its simple.