Bo539, I only tested the steel ones. I don't see how the titainiums could be any better. Titainium is stronger than aluminum of the same weight, but weaker than steel. the big atvantage is that it allows you to make a stronger broadhead then you can with aluminum at comparable weights.
Bob I tested the spittfires, they are a fairly good head, the blades are indeed sharp. The only problem I found with them is that they are slow to open, I prefer the shockwaves to the spittfires, but a bunch of guys on the board have used the spittfires with great results.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS