New E prop about a month ago.
It needs to be torqued a few times after installation and a few runs.
Mine runs 5600 WOT, initial climb 5400 with improved climb rate, cruise climb 5200-5300.
I think the "constant speed" effect is not the blades flexing (they are much stiffer than the Neuform) but rather the washout in the blades near the hub. I think that during climb the center portion of the prop is stalled, and less of it is stalled in cruise.
I was hoping it would run cooler in the climb with the higher rpms, but if anything it runs hotter, making more power in the climb.
Cruise at several rpm choices are very similar to the Neuform, but on a recent trip to the fly-in at Page, my fuel burn was 4.2 instead of 4.6 gph with the Neuform at about the same true airspeeds.
WF