I have used 4 blade broadheads, field tips (not recomended) obsidian points, hard plastic blunts and judo points. All except the field tip killed pretty fast but the best was the judo point. The impact force and the tissue dammage is immense.
1. Judo
2. blunt
3. broadhead
4. field point
I dont think speed really matters that much since most hunting arrows are around 400-500 grains. As for arrow weight I think anything that does not go under dry fire weight of the bow is good. Justin