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Savage Bolt-Action .22LR
Mossburg 500 20 Guage
New England Arms Single-Shot .410
T/C .54 cal Thunderhawk
PSE Firestorm X
Octane rest
Tru Glow 4-pin sight
Mongoose Quiver
Carbon Force Predator 200 arrows
70# 28in draw
Muzzy MX-4 100 gr
I said Thunderhead based on the fact that most people don't have the patience or skill to keep the Montec sharp (assuming you meant Montec when you put in the manufacturer: G5).
Don't fix it unless it's broke...
I've used Thunderheads since starting bow hunting in 1994.
Never had one fail, even including hitting a rock shooting @ a Turkey 50 yards away.
I believe the G5 is a very good design though.
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IF we all ARCHERY hunted with our QUIVERS loaded with Slim Jim's, WOULD the WORLD be a SAFER PLACE???
Comparing the two, no problems with either in flight, but the similarities end there. For blood loss the Thunderhead is king. For cost the Thunderhead is king. For sharpness the Thunderhead is king. For avalability the Thunderhead is king.
The work required to get a G5 as sharp as a thunderhead is extreme. You have to take 3 edges that are 60 degrees down to 20, evenly. That's just on one head.
I've shot both and neither was any more durable than the other. The cost on the other hand was significant.