Deffinately not a complaint.

Anyhow, I was flipping through my new Cabela's Archery catalogue and was thinking, what is the real difference between a 3 and 4 blade head?

Right now I'm shooting the 3 blade 100 grain heads, but I was wondering whether or not I should try a 4 blade.

What's the difference?
Is there a difference in cutting diameter/penetration?
Will 4 blade create more of a hinderance?
How is the stability during flight of a 4 blade?
Will I get just as many pass throughs?
Is it worth trying them out, or should i just stick with the 3 blades?

Thanks guys!