SpeedBoost by Going the A Way

After doing some quick research (I read the package and saw it worked with a MAC OS) I have switched to 802.11a/b/g from Netgear inside the house. Everything else works, but now when I'm on the Mac, I'm running 802.11a. What's it give me...Faster speeds and better connectivity. As far as I can tell, I'm the only "A" in the neighborhood, so that likely will mean less collisions and better Voice quality.