Where I live, I have won the last 3 pre-releases and always rank in the top 3 in sealed drafts. I can make decks like a boss with the cards I am given. I just stick with sealed (prereleases and booster drafts) so everyone essentially has the same chance of getting the same shit.
From the other topic....
+4/+0 > +3/+3
I say this because in most of my tournament experiences, the +4 is more game breaking. I wouldn't waste the +4/+0 on anything important. +4 on a 1/1 is enough. +3/+3 is just, meh. Its rounded yeah, but it doesn't do much really.