Zwickey Deltas.... they take a bit more patience for proper flight but well worth it.
Not being one for spine calculators and theory I set out to the range with a variety of shafts of different spine mounted with Deltas until I found the perfect combo, for my 69 lbs @ 28 longbow a 55 -60 spine lodge pole pine fitted with a 135 grain Delta was the ticket.
I generally shoot Hills but wanted something wider, I think the Deltas should fit the bill nicely.
Time proven, tough, and they fly great......but it takes just a bit of patience.  

i think deltas are my head this season.flying great just cant decide on 2 blade or 4

Paul,
I have some deltas I glued to some adapters and they fly like a dream from my morningstar. Im loving them.

oh and hows my, oh I mean your new osage special?  I wish I would have had more funds I would have made you run for it.  

KME puts a nasty razor edge on all Zwickey single blade heads.

I have killed more game with the Delta two blade than any other head I have used. Gary

The Zwickey Delta has been a "tuning tool" of mine for years....If you think you have good arrow flight, mount a Delta to your arrow (shaft material doesn`t matter), and back up thirty or forty yards. If the arrow tracks true to the target without veering, then you have an arrow tuned to your bow.

A big, wide, two bladed head like a Zwickey Delta will tell no lies about arrow flight.

QuoteOriginally posted by joe skipp:
KME puts a nasty razor edge on all Zwickey single blade heads.

x2

You aint kiddin Bonebuster, if you get a wide blade broadhead such as the Delta to fly true at those ranges, you have found the almost perfect, bow, arrow, fletch and broadhead combo.