Save your money and put it towards an Apex Tactical sear kit. Do a google search and you will find it, they even have videos on YouTube to illustrate the installation.
Heck I even shoot USPSA with Federal Champion. Just look out for accumulated brass in the striker channel, that caused me a few light primer hits. Cleaned the channel and not a problem since.
I believe the OP was talking about Federal vs Blazer Brass. The WWW he is referring to is the world wide web. I for one will shoot anything over WWB (Winchester White Box), it is way too dirty. Keep in mind I shoot .40 S&W.
Wscruiser, what do you think of the red dot? It looks like the 42mm red/green dot that I just put on my 15 22. I have not had a chance to shoot it yet (on call).