RE: muzzy vs. slick-trick
I shot the Muzzy four blade for years, but the last two years I've been trying to branch out into something new. Last year I used Rage, and it worked, but not like I had hoped from all the hype. So early on this year I went back to the Muzzy, and I'm much more satisfied with them rather than the Rage.
However, I bought a few Slick Trick 4 bladed broadheads, and they fly better out of my bow and they are much easier to resharpen. With the Muzzy's I always ended up just buying the replacement blades after they got dull because I could never get them hair shaving sharp with any of my stones, but with the Slick Tricks it just takes a few swipes with the diamond stone to get them good as new again. So for me, better flight and easier to get them back into service after they have been shot makes for a better broadhead for my set up. Both are great broadheads though.
To answer your question, no, it doesn't matter that you're arrows have three vanes. Not too many people use anything else.