2 blade or 3 blade propeller
I think that your post does help a lot. As an ex-dinghy racer I would think that you would be a bit more sensitive if the drag was noticably hurting your performance. With that in mind, the fact that from your perspective the three blade does not appear to noticably effect performance suggests that the impact of the three blade prop on the Hunter 335 is an obvious issue.
I also found your observation on reefing interesting. I find that I generally have to reef less with a fractional rig (at least on frac''s with backstay adjusters and decent deck hardware) but that when there comes a time when reefing is necessary, the reef produces a boat that has very nice handling characteristics, pretty much like a cutter sailing under mainsail and staysail only.
Thanks for your comments.