I have a Prosenthei, nice but awful delicate; we have broken two blades. Next is a straight blade Natanoko, which has a soft rubber handle, which is solidified by the metal blade extension inside. Someone must have stepped on it recently, as it just broke. Replacement blade is steep at $33. Next purchase will be a Zubat, and maybe the extension pole. The Ibuki, which Mike is referring too, I think, does look to have too much built in curve. There is a larger straight blade model, not carried by Sherril, that looks great for finishing off final hinge wood cuts, and has a beefier handle, like the Zubat. I saw Duane Neustater's in action, and will eventually get one. I also have a 21 foot Hayauchi, which is great if reach is needed, and very fast cutting, but fragile. "Bull in the china shop" me has bent it once and now broken it......Still somewhat useable, but can't fully retract it anymore.
Silkys are very fast cutting, hold an edge longer than anything else, but handle designs and fragility are issues, as well as price.
I still really like the cheap Coronas, which cut faster and hold an edge longer than Fanno.
Just don't call me a flower child: