So I just did a test with my broadheads. I put 4 jugs of water (1 gallon jugs) about 5 yards away shot them with each of my broadheads and had my GF time them for me. The results surprised me! Here is the results:
G5 Montec 1:03
Wac 'em 1:03
Muzzy Phantom 1:48
Phat Head Feather Duster 1:15
If you use any of these you should think about doing this test as well.